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13 Commits

Author SHA1 Message Date
Andreas Olofsson
e86567241d Cleanup 2016-01-19 16:06:38 -05:00
Andreas Olofsson
711088a9e7 Fixed mailbox bug on remap
- Bypassing remap on write to RX registers
- Otherwise the write to mailbox gets dropped since 810 gets remapped to 310
2015-11-29 12:10:53 -05:00
Andreas Olofsson
d275406aa6 Reset timing optimization
- holding rx in reset state until tx is done
- removing reset from all pipeline registers
- removing reset from oddr/iddr
- the idea is to keep things quiet not to block in lots of places. The only real block needed is in the FIFO to keep "noise" from propagating past the link. The link should be kept in a safe reset state until the rx fram is stable and the clock is running so that the pipe can be cleaned out.
2015-10-08 10:34:59 -04:00
Andreas Olofsson
0f24486a5f RX reset/clocking cleanup
- Making all resets async since we cannot guarantee that we have a clock coming in from RX. This is needed due to the way we use a PLL for alignment. If we would have used a free running local clock this would have been different, but this would have required a FIFO for synchronization betwen the rx and rxdiv4 clock.
- Moving the clock block into the RX for modularity
- Making a specil rx soft reset (driven from sys_clk domain)
- Still there is a POR_reset so the link should wake up ok
2015-10-07 19:12:57 -04:00
Andreas Olofsson
9bc40a8355 Fixing wait issue
-Removing the wait signal from the pipeline
-Assumption is that the prog_full is used on fifo, allowing two entries
to be captured in fifo.
-May revisit this at some time...
2015-08-14 17:13:52 -04:00
Andreas Olofsson
ede8656081 Fixing mutual exclusive bug on receiver
-When a read response is detected, there should be no spurious transactions to the RD/WR request fifos.
-Move the "filter" backt to the erx_protocol block
-Removed the remap bypass signal (was hacky)
-Passes simulations again..
2015-08-14 15:37:37 -04:00
Andreas Olofsson
41f97e45ff Converting to synchronous reset 2015-05-17 23:00:53 -04:00
Andreas Olofsson
81db0b7582 Completing elink hierarchy change
-splits out clock domains
-makes the core portion a clean/reusable module with defined interface
2015-05-10 23:38:08 -04:00
Andreas Olofsson
b2846c5312 MILESTONE: Read/write works back and forth
-Pipeline looks good, now need to test clk1>>clk2 and clk2>clk1
-Still not completely happy with reset (using async for now)
2015-05-04 17:13:51 -04:00
Andreas Olofsson
2460aa9247 Bypass erx remap on all ID matches
Not just for read responses..
2015-04-28 16:58:05 -04:00
Andreas Olofsson
df53a2dc4f Adding missing reset 2015-04-27 16:03:12 -04:00
Andreas Olofsson
4856e39193 RX address remap bug fix
-Used the wrong sub vector...
(silly mistake)
2015-04-27 09:29:22 -04:00
Andreas Olofsson
ea7683693c Adding RX/TX address remapping
The MMU is a monster and may be too much
Adding simple remapping modules
Covers todays feature and then some
1.) Static remapping
2.) Addresss compression
2015-04-24 17:29:05 -04:00