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300 Commits 7 Branches 1 Tag
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193 Commits

Author SHA1 Message Date
Andreas Olofsson
5f15ed220d Changing name 2015-05-01 14:42:15 -04:00
Andreas Olofsson
ad401d09e0 ?? 2015-04-30 23:35:01 -04:00
Andreas Olofsson
49bcc348e4 Making register map look more like Epiphany 2015-04-30 23:33:00 -04:00
Andreas Olofsson
395a1b3cb7 Merge branch 'master' of https://github.com/parallella/oh 
Adding complete register documentation

Conflicts:
	elink/README.md
 2015-04-29 11:55:01 -04:00
Andreas Olofsson
2ee3c7d942 merging local readme 2015-04-29 09:27:15 -04:00
Andreas Olofsson
861f5818d2 Updated with new registers and protocol 2015-04-29 09:24:47 -04:00
Andreas Olofsson
3ef05ad63a Register map twiddling.. 2015-04-28 17:00:17 -04:00
Andreas Olofsson
d00d58d116 Read response now a readable memory mapped register 
Much better...hidden addresses SUCK!
 2015-04-28 16:58:45 -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
a6ac9b4666 Added bit to etx_remap 
-To enable writing to ERX, we need to include the group number
-support groups F,E,D,C (bits [19:18])
 2015-04-28 16:56:31 -04:00
Andreas Olofsson
4ae2c1ecbf MILESTONE! Working test with new memory map and 2 link system 2015-04-28 16:55:57 -04:00
Andreas Olofsson
6b2d479692 DV environment cleanup 
-removed floating signals
-blocking ID transactions from reaching memory  (should be done in real design as well)
 2015-04-28 16:55:12 -04:00
Andreas Olofsson
a2ceb8ff6e Cleanup, two-link environment working 
-Write to config registers from RX path now working
 2015-04-28 00:47:26 -04:00
Andreas Olofsson
02812c03a8 Fixing bug on 64 bit register write 2015-04-28 00:46:40 -04:00
Andreas Olofsson
67a05c9363 Fixing floating wait signal bug 2015-04-28 00:46:03 -04:00
Andreas Olofsson
0431d79992 Enabling RX always 
-Should we ever turn this off?
 2015-04-28 00:45:16 -04:00
Andreas Olofsson
96c35c4908 Removing filter for rxwr_access 
-Needed to enable simple mi_write interface on RX
 2015-04-28 00:44:20 -04:00
Andreas Olofsson
f544c44a08 Adding register access from RX 
-Access without symmetry was awkward, now we can reach regs from TX or RX side
-Removes a special path for mailbox (came for free)
-At the same time reduced clock complexity (one clock for system!!)
-Moved mailbox to top level
-Changed main clock to "sys_clk" for all
 2015-04-27 23:51:00 -04:00
Andreas Olofsson
e1a295998f Adding 2nd elink to dv env 
-The single link env wasn't giving enough coverage
-This is also preparing for inserting the chip reference model...
 2015-04-27 23:45:43 -04:00
Andreas Olofsson
6b108f5e1f Adding reset to synchronizer 
(cause there may not be a clock...)
 2015-04-27 16:03:57 -04:00
Andreas Olofsson
df53a2dc4f Adding missing reset 2015-04-27 16:03:12 -04:00
Andreas Olofsson
a1722b7ae6 Adding timeout circuit 2015-04-27 16:02:15 -04:00
Andreas Olofsson
c9124f415b Added "timeout" to elink interface 
-Use as error interrupt?
-Is there another method for checking error?
 2015-04-27 15:11:56 -04:00
Andreas Olofsson
b0116c9316 Added read watchdog timer 
-A read on transmit side initiates timer
-Timer is reset when read request comes back
(assumption last read requests starts timer..last return stops it)
 2015-04-27 13:00:00 -04:00
Andreas Olofsson
3683c39e5b Bug fix. Fifo read delay not accounted for 
-Added valid signal to fifo
 2015-04-27 11:16:15 -04:00
Andreas Olofsson
d0c4e4f3bd Fixing arbitration issue 
-Read/write can collide, adding wait pushback for read
 2015-04-27 11:14:26 -04:00
Andreas Olofsson
3567805823 Adding dummy vector to testbench 
-All zeroes is ignored by stimulus
-Easy to remember...
 2015-04-27 11:13:53 -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
d79447853f Register name shuffle 2015-04-27 09:28:52 -04:00
Andreas Olofsson
d44ea5d089 Adding monitor for ememory in dv_elink.v 
-Dumps into emem.trace
 2015-04-27 00:06:04 -04:00
Andreas Olofsson
3cb8d1d426 Adding test mode registers for transmit path 
Makes it possible to easily test the IO path using the mi_ interface
The mi interface is very simple to drive in logic...
 2015-04-27 00:04:30 -04:00
Andreas Olofsson
89286af8a9 Adding documentation of elink protocol 2015-04-26 23:02:13 -04:00
Andreas Olofsson
f7aef66f29 Bug fix: erx pipeline misalignment 
-access signal happens one signal after empty goes low to compensate for fifo data latency
-verify that this is how the Xilinx FIFO works as well.
 2015-04-26 08:31:36 -04:00
Andreas Olofsson
21f87edd87 Memory bug fix 
-srcaddr (upper data of read response) was using input instead of output data
-blocking upper data on 32 bit reads and smaller (quieter..)
Need random DV to flush out these silly bugs...
 2015-04-26 08:29:50 -04:00
Andreas Olofsson
afd6e86840 Fixing etx pipeline 
-Fixed one bug inserted during edits, causing double transactions
-Added pipeline stall logic to all units
 2015-04-25 23:28:52 -04:00
Andreas Olofsson
ca835b9607 tweaking register map again... 2015-04-25 23:28:18 -04:00
Andreas Olofsson
5f595a75d3 Register write bug for new map 
-Need to block access if [15] is one (reserved for emmurx)
 2015-04-25 07:10:13 -04:00
Andreas Olofsson
919a5fa5e8 Register map twiddles 
-Fixed test to correspond to new map
 2015-04-25 07:09:52 -04:00
Andreas Olofsson
c0d8c967c4 Address remapping integration 
Integrated remapping logic (compiles)
Starting debug tomorrow...
 2015-04-24 17:39:05 -04:00
Andreas Olofsson
be42ea3b89 Register map change 
-Changed register map
-Splitting into groups, more natural
 2015-04-24 17:38:01 -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
Andreas Olofsson
b25ad633f7 Readback cleanup 
RX/TX interfaces should be mininmized and standalone
Adding mux to consolidate to one "dout"
 2015-04-24 17:27:35 -04:00
Andreas Olofsson
3b637e55f0 MILESTONE: Design once again passes test 
New features:
DMA
MAILBOX directly in RX path
TXMMU
 2015-04-23 23:16:03 -04:00
Andreas Olofsson
0ed6afeac9 Added tag and group for read response 
-Still not sure about this..
 2015-04-23 23:14:39 -04:00
Andreas Olofsson
46896c63ef Bug fix, adding reset signal 
This will blocking when there is no clock at startup.
 2015-04-23 23:13:05 -04:00
Andreas Olofsson
24fc91072d Adding IDs to keep access signals straight 2015-04-23 23:11:58 -04:00
Andreas Olofsson
5af7a745b1 Created separate IDs for RX and TX 
-We want to make the two directions as separate as possible so no shared variables. Still need a tag for differentiating between write and read response. In addition we need a group to keep the rr separate from mailbox write.
git diffgit c
 2015-04-23 23:10:27 -04:00
Andreas Olofsson
01fec0f72a Fixed elink missind ID parameter 2015-04-23 20:07:52 -04:00
Andreas Olofsson
5c8fb41849 Fifo read bug 
-fifo should be read when it's not empty and there is no wait pushback
 2015-04-23 20:07:10 -04:00
Andreas Olofsson
c4c1edc10f Adding reset to critical signals in pipe 2015-04-23 20:06:11 -04:00