diff options
Diffstat (limited to 'mpm/python/usrp_mpm/liberiotable.py')
| -rw-r--r-- | mpm/python/usrp_mpm/liberiotable.py | 18 |
1 files changed, 3 insertions, 15 deletions
diff --git a/mpm/python/usrp_mpm/liberiotable.py b/mpm/python/usrp_mpm/liberiotable.py index 8f70c5ebe..6f2454379 100644 --- a/mpm/python/usrp_mpm/liberiotable.py +++ b/mpm/python/usrp_mpm/liberiotable.py @@ -19,15 +19,13 @@ class LiberioDispatcherTable(object): label -- A label that can be used by udev to find a UIO device """ - MTU_OFFSET = 0x80000 - def __init__(self, label): self.log = get_logger(label) self._regs = UIO(label=label, read_only=False) self.poke32 = self._regs.poke32 self.peek32 = self._regs.peek32 - def set_route(self, sid, dma_channel, mtu): + def set_route(self, sid, dma_channel): """ Sets up routing in the Liberio dispatcher. From sid, only the destination part is important. After this call, any CHDR packet with the @@ -35,14 +33,10 @@ class LiberioDispatcherTable(object): sid -- Full SID, but only destination part matters. dma_channel -- The DMA channel to which these packets should get routed. - mtu -- Max size of bytes per packet. This is important to get right. The - DMA implementation will pad packets smaller than MTU up to the - mtu value, so making MTU extra large is inefficient. Packets - larger than MTU will get chopped up. Even worse. """ self.log.debug( - "Routing SID `{sid}' to DMA channel `{chan}', MTU {mtu} bytes.".format( - sid=str(sid), chan=dma_channel, mtu=mtu + "Routing SID `{sid}' to DMA channel `{chan}'.".format( + sid=str(sid), chan=dma_channel ) ) def poke_and_trace(addr, data): @@ -51,18 +45,12 @@ class LiberioDispatcherTable(object): addr, data )) self.poke32(addr, data) - # Poke reg for destination channel - # Poke reg for MTU try: poke_and_trace( 0 + 4 * sid.dst_ep, dma_channel, ) - poke_and_trace( - self.MTU_OFFSET + 4 * sid.dst_ep, - int(mtu / 8), - ) except Exception as ex: self.log.error( "Unexpected exception while setting route: %s", |