| 1 | Driver for opencores ethernet MAC - README |
|---|
| 2 | ------------------------------------------ |
|---|
| 3 | |
|---|
| 4 | The device name for the driver is 'open_eth1', the attach |
|---|
| 5 | function for the leon bsp is rtems_leon_open_eth_driver_attach(). |
|---|
| 6 | |
|---|
| 7 | No cache flushing is made when a frame is received. On leon, |
|---|
| 8 | this means that cache snooping must be configured in the |
|---|
| 9 | vhdl model and enabled by software. |
|---|
| 10 | |
|---|
| 11 | TX interrupts are not used and masked in the interrupt mask |
|---|
| 12 | register. |
|---|
| 13 | |
|---|
| 14 | For now, only 10 Mbit/s half-duplex is supported. |
|---|
| 15 | 100 Mbit/s operations does not work reliably, the transmitter |
|---|
| 16 | locks up or skips frames. Seems to depend on the TX fifo |
|---|
| 17 | implementation in the opencores MAC. Send a mail to |
|---|
| 18 | jiri@gaisler.com if you know how to fix this. |
|---|
| 19 | |
|---|
| 20 | Tested only on leon, using the GR-PCI-XC2V board @ 40 MHz. |
|---|
| 21 | Output from ttcp receiving 1 Mbyte file: |
|---|
| 22 | |
|---|
| 23 | >>> ttcp -r -s |
|---|
| 24 | ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp |
|---|
| 25 | ttcp-r: socket |
|---|
| 26 | ttcp-r: accept from 192.168.0.2 |
|---|
| 27 | ttcp-r: 1145339 bytes in 1.18 real seconds = 947.88 KB/sec +++ |
|---|
| 28 | ttcp-r: 792 I/O calls, msec/call = 1.53, calls/sec = 671.19 |
|---|
| 29 | ttcp-r: 0.0user 1.1sys 0:01real 100% 0i+0d 0maxrss 0+0pf 0+0csw |
|---|
| 30 | ************ MBUF STATISTICS ************ |
|---|
| 31 | mbufs:1024 clusters: 128 free: 112 |
|---|
| 32 | drops: 0 waits: 0 drains: 0 |
|---|
| 33 | free:1007 data:17 header:0 socket:0 |
|---|
| 34 | pcb:0 rtable:0 htable:0 atable:0 |
|---|
| 35 | soname:0 soopts:0 ftable:0 rights:0 |
|---|
| 36 | ifaddr:0 control:0 oobdata:0 |
|---|
| 37 | |
|---|
| 38 | ************ INTERFACE STATISTICS ************ |
|---|
| 39 | ***** open_eth1 ***** |
|---|
| 40 | Address:192.168.0.66 Broadcast Address:192.168.0.255 |
|---|
| 41 | Flags: Up Broadcast Running Simplex |
|---|
| 42 | Send queue limit:50 length:0 Dropped:0 |
|---|
| 43 | Rx Packets:796 Rx Interrupts:796 Length:0 |
|---|
| 44 | Bad CRC:0 Overrun:0 Miss:0 |
|---|
| 45 | Tx Interrupts:0 Deferred:0 Missed Hearbeat:0 |
|---|
| 46 | No Carrier:0 Retransmit Limit:0 Late Collision:0 |
|---|
| 47 | Underrun:0 Raw output wait:0 |
|---|
| 48 | |
|---|
| 49 | ************ IP Statistics ************ |
|---|
| 50 | total packets received 795 |
|---|
| 51 | datagrams delivered to upper level 795 |
|---|
| 52 | total ip packets generated here 401 |
|---|
| 53 | |
|---|
| 54 | ************ TCP Statistics ************ |
|---|
| 55 | connections accepted 1 |
|---|
| 56 | connections established 1 |
|---|
| 57 | conn. closed (includes drops) 1 |
|---|
| 58 | segs where we tried to get rtt 2 |
|---|
| 59 | times we succeeded 2 |
|---|
| 60 | delayed acks sent 4 |
|---|
| 61 | total packets sent 401 |
|---|
| 62 | ack-only packets sent 6 |
|---|
| 63 | window update-only packets sent 394 |
|---|
| 64 | control (SYN|FIN|RST) packets sent 1 |
|---|
| 65 | total packets received 795 |
|---|
| 66 | packets received in sequence 792 |
|---|
| 67 | bytes received in sequence 1145339 |
|---|
| 68 | rcvd ack packets 2 |
|---|
| 69 | bytes acked by rcvd acks 2 |
|---|
| 70 | times hdr predict ok for data pkts 791 |
|---|
| 71 | |
|---|
| 72 | |
|---|
![[RTEMS Logo]](/images/logo.png){kind=logo}
