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transport: add _get_item and simplify _encode_cmd/_decode_cmd

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This commit is contained in:
Florent Kermarrec 2014-12-15 13:38:50 +01:00
parent f226de5ba0
commit d970bfb140
1 changed files with 11 additions and 12 deletions
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23
lib/sata/transport/__init__.py
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@ -3,17 +3,21 @@ from migen.genlib.fsm import FSM, NextState
from lib.sata.common import *
def _get_item(obj, name, width):
if "_lsb" in name:
item = getattr(obj, name.replace("_lsb", ""))[:width]
elif "_msb" in name:
item = getattr(obj, name.replace("_msb", ""))[width:2*width]
else:
item = getattr(obj, name)
return item
def _encode_cmd(obj, description, signal):
r = []
for k, v in sorted(description.items()):
start = v.dword*32 + v.offset
end = start + v.width
if "_lsb" in k:
item = getattr(obj, k.replace("_lsb", ""))[:v.width]
elif "_msb" in k:
item = getattr(obj, k.replace("_msb", ""))[v.width:2*v.width]
else:
item = getattr(obj, k)
item = _get_item(obj, k, v.width)
r.append(signal[start:end].eq(item))
return r
@ -114,12 +118,7 @@ def _decode_cmd(signal, description, obj):
for k, v in sorted(description.items()):
start = v.dword*32+v.offset
end = start+v.width
if "_lsb" in k:
item = getattr(obj, k.replace("_lsb", ""))[:v.width]
elif "_msb" in k:
item = getattr(obj, k.replace("_msb", ""))[v.width:2*v.width]
else:
item = getattr(obj, k)
item = _get_item(obj, k, v.width)
r.append(item.eq(signal[start:end]))
return r