IOReturn HoRNDIS::enable(IONetworkInterface *netif) {
IONetworkMedium *medium;
IOReturn rtn = kIOReturnSuccess;
if (fNetifEnabled) {
LOG(V_ERROR, "already enabled?");
return kIOReturnSuccess;
}
if (!allocateResources())
return kIOReturnNoMemory;
if (!fMediumDict)
if (!createMediumTables()) {
rtn = kIOReturnNoMemory;
goto bailout;
}
setCurrentMedium(IONetworkMedium::medium(kIOMediumEthernetAuto, 480 * 1000000));
/* Kick off the first read. */
inbuf.comp.target = this;
inbuf.comp.action = dataReadComplete;
inbuf.comp.parameter = NULL;
rtn = fInPipe->Read(inbuf.mdp, &inbuf.comp, NULL);
if (rtn != kIOReturnSuccess)
goto bailout;
/* Tell the world that the link is up... */
medium = IONetworkMedium::getMediumWithType(fMediumDict, kIOMediumEthernetAuto);
setLinkStatus(kIONetworkLinkActive | kIONetworkLinkValid, medium, 480 * 1000000);
/* ... and then listen for packets! */
getOutputQueue()->setCapacity(TRANSMIT_QUEUE_SIZE);
getOutputQueue()->start();
LOG(V_DEBUG, "txqueue started");
/* Tell the other end to start transmitting. */
if (!rndisSetPacketFilter(RNDIS_DEFAULT_FILTER))
goto bailout;
/* Now we can say we're alive. */
fNetifEnabled = true;
return kIOReturnSuccess;
bailout:
LOG(V_ERROR, "setting up the pipes failed");
releaseResources();
return rtn;
}
bool
MolEnet::start( IOService * provider )
{
IOPhysicalAddress tx_phys, rx_phys;
IOPhysicalAddress tx_of_phys, rx_of_phys;
int i, result;
if( !super::start(provider) )
return false;
if( OSI_Enet2Open() ) {
is_open = 1;
return false;
}
//transmitQueue = OSDynamicCast( IOGatedOutputQueue, getOutputQueue() );
transmitQueue = OSDynamicCast( IOBasicOutputQueue, getOutputQueue() );
if( !transmitQueue ) {
printm("MolEnet: output queue initialization failed\n");
return false;
}
transmitQueue->retain();
// Allocate a IOMbufBigMemoryCursor instance. Currently, the maximum
// number of segments is set to 2. The maximum length for each segment
// is set to the maximum ethernet frame size (plus padding).
txMBufCursor = IOMbufBigMemoryCursor::withSpecification( NETWORK_BUFSIZE, 2 );
rxMBufCursor = IOMbufBigMemoryCursor::withSpecification( NETWORK_BUFSIZE, 2 );
if( !txMBufCursor || !rxMBufCursor ) {
printm("MolEnet: IOMbufBigMemoryCursor allocation failure\n");
return false;
}
// Get a reference to the IOWorkLoop in our superclass.
IOWorkLoop * myWorkLoop = getWorkLoop();
assert(myWorkLoop);
// Allocate a IOInterruptEventSources.
_irq = IOInterruptEventSource::interruptEventSource( this,
(IOInterruptEventAction)&MolEnet::rxIRQ, provider, 0);
if( !_irq || (myWorkLoop->addEventSource(_irq) != kIOReturnSuccess )) {
printm("MolEnet: _irq init failure\n");
return false;
}
// Allocate the ring descriptors
rx_ring = (enet2_ring_t*)IOMallocContiguous( 2 * RX_NUM_EL * sizeof(enet2_ring_t),
sizeof(enet2_ring_t), &rx_phys );
tx_ring = (enet2_ring_t*)IOMallocContiguous( 2 * TX_NUM_EL * sizeof(enet2_ring_t),
sizeof(enet2_ring_t), &tx_phys );
if( !rx_ring || !tx_ring )
return false;
rx_of_ring = rx_ring + RX_NUM_EL;
tx_of_ring = tx_ring + TX_NUM_EL;
rx_of_phys = rx_phys + sizeof(enet2_ring_t) * RX_NUM_EL;
tx_of_phys = tx_phys + sizeof(enet2_ring_t) * TX_NUM_EL;
// Allocate receive buffers
for( i=0; i<RX_NUM_EL; i++ ) {
if( !(rxMBuf[i]=allocatePacket( NETWORK_BUFSIZE )) ) {
printm("MolEnet: packet allocation failed\n");
return false;
}
// reserve 2 bytes before the actual packet
rxMBuf[i]->m_data += 2;
rxMBuf[i]->m_len -= 2;
}
OSI_Enet2Cntrl( kEnet2Reset );
result = OSI_Enet2RingSetup( kEnet2SetupRXRing, rx_phys, RX_NUM_EL )
|| OSI_Enet2RingSetup( kEnet2SetupTXRing, tx_phys, TX_NUM_EL )
|| OSI_Enet2RingSetup( kEnet2SetupRXOverflowRing, rx_of_phys, RX_NUM_EL )
|| OSI_Enet2RingSetup( kEnet2SetupTXOverflowRing, tx_of_phys, TX_NUM_EL );
if( result )
return false;
if( !resetAndEnable(false) )
return false;
// Create a table of supported media types.
if( !createMediumTables() )
return false;
// Attach an IOEthernetInterface client.
if( !attachInterface( (IONetworkInterface**)&networkInterface, false ) )
return false;
// Ready to service interface requests.
networkInterface->registerService();
printm("Ethernet driver 1.1\n");
return true;
}