3.3. Simulation
The testbech povides basic fuctioality such as the statup ad wait fo lock ad sed ad eceive a few packets utilizig the PTP featue.
Sice Fast Sim model does ot suppot the PTP timestamp accuacy, the model is ot eabled by default i the desigs with eabled PTP featue. To utilize the Fast Sim model fo fuctioal pupose simulatio, efe to Fast Sim Model fo FGT Vaiats.
Note: I PTP desig examples, the simulatio pitout displays the timestamp accuacy as RX ITS - TX ETS ifomatio.
- Asset global eset (i_st_) to eset the F-Tile Etheet Itel FPGA Had IP.
- Wait util esets ackowledgmet. The o_st_ack_ sigal goes low.
- Deassets the global eset.
- Wait util o_tx_laes_stable bit is set to 1, idicatig TX path is eady.
- Wait util o_x_pcs_eady bit is set to 1, idicatig RX path is eady.
- Pefom the PTP use flow util tx_ptp_eady ad x_ptp_eady sigals ae set to 1.
- Wite to PTP Asymmety Delay ad pee-to-pee MeaPathDelay Avalo® memoy-mapped iteface egistes.
- Reset the PTP moito.
- Read TX packet data ifomatio fom 0x00 - 0x34 egistes i sequetial ode.
- 0x00: Set hw_pc_ctl[6] = 1'b1 to eable sapshot bit to ead the TX packet statistics.
- 0x020/0x24: TX stat of packet coute (LSB/MSB)
- 0x28/0x2C: TX ed of packet coute (LSB/MSB)
- 0x30/0x34: TX eo coute (LSB/MSB)
- 0x00: Set hw_pc_ctl[6] = 1'b0 to disable sapshot bit.
- Read RX packet data ifomatio fom 0x38 - 0x4C egistes i sequetial ode.
- 0x00: Set hw_pc_ctl[6] = 1'b1 to eable sapshot bit to ead the RX packet statistics.
- 0x38/0x3C: RX stat of packet coute (LSB/MSB)
- 0x40/0x44: RX ed of packet coute (LSB/MSB)
- 0x48/0x4C: RX eo coute (LSB/MSB)
- 0x00: Set hw_pc_ctl[6] = 1'b0 to disable sapshot bit.
- Compae ead coutes to esue 16 packets wee set ad eceived.
- Istuct packet cliet to stop data tasmissio ad clea the coutes by witig hw_pc_ctl[2:0]=3'b100 to stop the packet geeato.
- Stat the PTP checke.
- Wait util the packet tasmissio is complete. Poll the TX_PKT_VALID bit to moito the tasmissio status.
- Read TX packet data ifomatio fom 0x102 - 0x104 egistes i sequetial ode, statig fom the 0x102 egiste. The PTP moito logic efeshes the 0x102 - 0x104 egistes cotet to ext data whe ead fom 0x104 egiste.
- Repeat the pevious step util the TX_PKT_EOP bit is set to 1 idicatig the ead opeatio eached the ed of the packet.
- Read TX PTP commad ifomatio fom 0x105 - 0x10A egistes i sequetial ode, statig fom the 0x105 egiste. The PTP moito logic efeshes the 0x105 - 0x10A egistes cotet to ext data whe ead fom 0x10A egiste.
- If TX PTP commad idicates a PTP packet:
- Wait util the TX egess timestamp is available. Use the TX_PTP_ETS_VALID sigal to moito the status.
- Read the TX egess timestamp fom the 0x10C - 0x10F egistes i sequetial ode, statig with the 0x10C egiste.
- Wait util the packets ae loop backed i the RX data path. Poll the RX_PKT_VALID bit to moito the tasmissio status.
- Read RX packet data ifomatio fom 0x110 - 0x112 egistes i sequetial ode, statig with the 0x110 egiste. The PTP moito logic efeshes the 0x110 - 0x112 egistes cotet to ext data whe ead fom 0x112 egiste.
- Repeat the pevious step util the RX_PKT_EOP bit is set to 1 idicatig the ead opeatio eached the ed of the packet.
- Read RX igess timestamp.
- Read the RX igess timestamp fom the 0x114 - 0x116 egistes i sequetial ode, statig with the 0x14 egiste. The PTP moito logic efeshes the 0x114 - 0x116 egistes cotet to ext data whe ead fom 0x116 egiste.
- Display the TX packet cotet, RX packet cotet, TX PTP commads, TX egess timestamp, ad RX igess timestamp ifomatio.
- Display the compaiso ifomatio. Note that i 1-step commads, the TX/RX packets ad PTP commads field cotet is the same.
- Repeat steps b though step k util the system pocesses all packets.
Note: The desig example simulatio pefoms step 14 fo oly fist six packets to educe log simulatio time.
- Pefom Avalo® memoy-mapped iteface test o PTP-elated egistes.
- Selective PTP Asymmety Delay ad P2P MeaPathDelay egistes
- Selective Maste TOD Avalo® memoy-mapped iteface egistes
- Pefom Avalo® memoy-mapped iteface test. Wite ad ead Etheet IP egistes.
- 0x104: Scatch egiste
- 0x108: Etheet IP soft eset egiste
- 0x214: TX MAC souce addess egiste [31:0]
- 0x218: TX MAC souce addess egiste [47:32]
- 0x21C: RX MAC fame size egiste
- Pefom Avalo® memoy-mapped iteface 2 test. Wite ad ead tasceive egistes.
The followig sample output illustates a successful simulatio test:
203145s : Fame moitoed by basic_avl_tb_top.U_MON_TX 203145s : Fame legth : 128 203145s : Empty : 0 ---------------------------------------------------------- | 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 ---------------------------------------------------------- 0000 | ab e4 23 39 f0 00 1e 84 33 9f 01 00 88 f7 00 00 0010 | 10 11 12 13 aa 15 16 aa 18 19 1a 1b 1c 1d 1e 1f 0020 | 20 21 22 23 bb cc 26 27 28 29 2a 2b 2c 2d 2e 2f 0030 | 30 31 32 33 34 35 36 37 bb cc 3a 3b 3c 3d 3e 3f 0040 | 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f 0050 | 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f 0060 | 60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f 0070 | 70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f ---------------------------------------------------------- PTP Commad foud. tx_timestamp_q.push_back The time ow is 210000s 210805s : Fame moitoed by basic_avl_tb_top.U_MON_RX 210805s : Fame legth : 128 210805s : Empty : 0 ---------------------------------------------------------- | 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 ---------------------------------------------------------- 0000 | ab e4 23 39 f0 00 1e 84 33 9f 01 00 88 f7 00 00 0010 | 10 11 12 13 aa 15 16 aa 18 19 1a 1b 1c 1d 1e 1f 0020 | 20 21 22 23 bb cc 26 27 28 29 2a 2b 2c 2d 2e 2f 0030 | 30 31 32 33 34 35 36 37 bb cc 3a 3b 3c 3d 3e 3f 0040 | 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f 0050 | 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f 0060 | 60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f 0070 | 70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f ---------------------------------------------------------- ------------------------------ TX PTP Commad #1 ------------------------------ Egess Timestamp Request : 1 Iset Timestamp : 0 Update CoectioField : 0 Clea UDP/IPv4 Checksum : 0 Update UDP/IPv6 Exteded Bytes : 0 Add Pee-to-Pee (P2P) MiPathDelay : 0 Add Asymmety Delay : 0 Asymmety Delay Sig : 0 Asymmety & P2P MiPathDelay Select : 0 Timestamp Field Offset : 0x0000 Coectio Field Offset : 0x0000 TX Figepit Data : 0x00000001 TX Igess Timestamp : 0x00000000000000001234abcd ------------------------------ Timestamps #1 ------------------------------ TX Egess Timestamp : 0x000000000000000265ae2c80 RX Igess Timestamp : 0x000000000000000265ae1680 TX Use Figepit : 0x00000001 TX Retued Figepit : 0x00000001 ------------------------------ Compaiso #1 ------------------------------ RX_ITS - TX_ETS : 0x1ffffffffffffffffffffea00/-0.0859 s TX Timestamp Fields : 0x3031323334353637bbcc RX Timestamp Fields : 0x3031323334353637bbcc TX Coectio Fields : 0x16aa18191a1b1c1d RX Coectio Fields : 0x16aa18191a1b1c1d