Commit Graph

98 Commits

Author SHA1 Message Date
21a0d0e69a phy_cdc: Allow unlimited clock ratios
Actually, assuming that each clock domain is fast enough for 10 MBit/s,
there is no problem running crazy ratios.
2024-07-06 18:05:00 +02:00
943febcb99 phy_cdc: Fix synchronization behavior
For low ratios of the two clock domains, the slow clock domain would
receive incorrect data as the fast (PHY) clock domain's data output
would have already updated with the first bit of the next byte by
the time the slow (system) clock domain read it.

This fix registers the data in the source clock domain as opposed
to the destination clock domain. This is allowed because the valid
strobe is synchronized in a way to guarantee that data has been
valid for a while when it becomes asserted.

Additionally, `phy_out.rx_data` and `phy_out.rx_data_valid` are no
longer registered in the destination (system) clock domain as this
now introduces unnecessary latency. Also, this was broken the way
it was anyway as `rx_active` and `rx_error` would've also had to be
registered to keep all timings in sync.
2024-07-06 17:58:11 +02:00
da7e329939 des: Fix compatibility with Yosys 2024-06-22 11:19:02 +02:00
4bce111d69 doc: Add synthesized size for PHY-only design 2024-02-04 09:34:36 +01:00
2190f146a0 doc: Add IPv4 modules to doc 2022-11-01 17:41:39 +01:00
91cdb13bb3 demo: Add ICMP ping reply demo design 2022-11-01 17:39:39 +01:00
0db98483dc ipv4: Change syntax to make Synplify happy 2022-11-01 17:10:33 +01:00
6de8d24537 icmp: Implement ICMP echo replies 2022-11-01 16:23:27 +01:00
87bc9ce3d7 ipv4: Add rx_length field 2022-11-01 16:22:59 +01:00
fdcb1cb719 ipv4: Implement IPv4 TX 2022-10-31 23:46:46 +01:00
a0c9df28f1 ipv4: Remove obsolete signals 2022-10-31 23:45:05 +01:00
0d7981f801 ipv4: Default sr to all zeroes to squelch warnings 2022-10-31 17:02:37 +01:00
172a11070b ipv4prot: Implement IPv4 protocol muxing 2022-10-31 16:57:54 +01:00
9d9b3b1cce eth: Fix incorrect TX exit condition 2022-10-31 16:56:17 +01:00
e421ba0dff eth: Fix missing reset for tx sel 2022-10-31 16:55:13 +01:00
277d01737d ipv4: Implement RX 2022-10-30 22:32:47 +01:00
a19de6d0c8 gen: Add generic timer module 2022-10-30 22:31:10 +01:00
1c08d48861 doc: Add ARP layer to README 2022-10-30 17:38:29 +01:00
ccb7d6c0da Fix linter warnings 2022-10-30 17:29:14 +01:00
8d9ca9e784 arp: Rename timeout_tick to systick 2022-10-30 17:27:43 +01:00
3240f363ba arp: Reformat code 2022-10-29 19:19:16 +02:00
a5d5ca280d arp: Add timeout 2022-10-29 19:18:51 +02:00
651b6bb11e bench: Test ARP requests in HWITL 2022-10-28 18:55:04 +02:00
4804674d8e arp: Implement ARP requests
This is still missing timeout in case of no reply.
This needs to be added!
2022-10-28 18:52:17 +02:00
1a41120afa bench: Clarify HWITL interface creation for local testing 2022-10-27 17:02:53 +02:00
5f7704cf63 pkg: Implement to_string functions for MAC and IP addresses 2022-05-15 14:51:52 +02:00
5f389b0c7b arp: Implement ARP replies 2022-05-15 14:51:49 +02:00
7bb82a9acf doc: Add trashernet_eth to documentation 2022-05-15 14:40:45 +02:00
3c1c14f953 bench: hw_itl: Add debug prints for RX/TX 2022-05-15 14:37:21 +02:00
50b65bccec eth: tx: Remove accidental latch 2022-05-15 14:30:45 +02:00
461c7ebce1 eth: tx: Fix polarity of tx_active checks 2022-05-15 14:27:26 +02:00
eab8783c6b bench: Disable wave logging by default 2022-05-13 21:03:12 +02:00
8f4e996d57 bench: Clean up HWITL bench 2022-05-13 20:42:18 +02:00
e420b08eb2 bench: Add preliminary HWITL test for eth core 2022-05-13 20:39:05 +02:00
7aa1b56bf9 eth: Add Ethernet type MUX 2022-05-13 20:37:28 +02:00
8f3420bd54 pkg: Add configuration_t to trashernet 2022-05-13 20:36:52 +02:00
4b4e5fdbfa bench: hw_itl: Calculate and append FCS for incoming frames 2022-05-13 18:20:13 +02:00
0e80900426 bench: hw_itl: Add comments 2022-05-13 18:19:35 +02:00
fd721ae24f bench: Move HWITL tests to own top level / test bench file 2022-04-30 12:53:35 +02:00
82d4e6808b bench: hwitl: Fix design to HW comms
Forgot to remove the sync header.
2022-04-30 12:48:39 +02:00
1c281bc0f7 bench: Add hardware-in-the-loop test 2022-04-29 20:53:20 +02:00
c4f4cfe68e bench: Allow for different bench top levels in Makefile 2022-04-29 20:52:31 +02:00
f224aee487 doc: Add licensing info about the components of the logo 2022-04-24 12:26:19 +02:00
f45ded2ca9 bench: Add cocotb-based test bench for MAC test 2022-04-18 17:06:53 +02:00
7d86f6a262 env: Add Sigasi project files 2022-04-18 10:17:42 +02:00
313711dbc0 doc: Add KiCad schematic 2022-04-18 10:04:24 +02:00
0f7437e901 demo: Fix missing record in mac demo
Will eventually become part of trashernet, I guess. But for now,
let's add it to the top level.
2022-04-18 09:44:27 +02:00
5c27b685dc demo: Move top level to library work
With Diamond, the design top level *must* be in the "work" library,
otherwise your project will be haunted with weird compile errors
that sometimes simply cause the build to fail with an arbitrary
error message, but can sometimes even lead to a straight-up broken
bitstream.

Real bad stuff, so let's move the stuff from our "design" library
to "work". That fixes it.
2022-02-12 13:19:14 +01:00
6beb9c8346 demo: Remove wait state
Not needed since a9039a175c.
2022-01-30 19:40:55 +01:00
5b54a596c1 doc: Add circuit diagram 2022-01-30 19:29:09 +01:00