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| mithro | Well, I've now run into an issue | 00:03 |
|---|---|---|
| mithro | the lm32 cpu doesn't seem to compile with icecube2 | 00:03 |
| mithro | and the io doesn't seem to work with nextpnr | 00:03 |
| cr1901_modern | cc: daveshah :) | 00:03 |
| mithro | trying with arachne-pnr now... | 00:05 |
| mithro | After placement: | 00:09 |
| mithro | PIOs 11 / 63 | 00:09 |
| mithro | PLBs 856 / 960 | 00:09 |
| mithro | BRAMs 32 / 32 | 00:09 |
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| mithro | arachne-pnr can't route 3-4 lines... | 01:07 |
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| mithro | Welp, arachne-pnr doesn't work with the litex bridge version either.... | 01:17 |
| mithro | Oh, it seems the bridge version is now working in nextpnr! | 02:23 |
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| mithro | cr1901_modern: I've got a job for you :-P | 03:07 |
| mithro | tannewt: ping? | 03:43 |
| mithro | tannewt: As far as I can tell, the hardware is working - I just now need to get the software right... | 03:44 |
| tannewt | mithro: can you sniff the usb traffic through litescope still? | 03:46 |
| cr1901_modern | mithro: Oh? | 03:57 |
| mithro | tannewt: I have my pipistrello sniffing the traffic | 03:58 |
| tannewt | is it getting anywhere? | 03:58 |
| mithro | tannewt: It sends the first setup packet and then everything is naked | 03:59 |
| mithro | cr1901_modern: bram patching! | 03:59 |
| cr1901_modern | isn't that already doable in ice40? | 03:59 |
| tannewt | and its acked? on linux thats the get descriptor right? | 04:00 |
| tannewt | is the usb interrupt working? | 04:01 |
| mithro | cr1901_modern: In litex | 04:02 |
| cr1901_modern | ahhhh, hmmm | 04:03 |
| mithro | tannewt: I don't think tinyusb is getting the first setup data | 04:03 |
| mithro | tannewt: And I'm unsure the correct behaviour of tinyusb anyway... | 04:04 |
| tannewt | Its usually that the usb interrupt handler is called and it calls dcd_setup_received to queue the packet | 04:05 |
| tannewt | should it be in here: https://github.com/mithro/tinyusb/blob/develop/src/portable/valentyusb/dcd_valentyusb.c#L46 ? | 04:07 |
| tpb | Title: tinyusb/dcd_valentyusb.c at develop · mithro/tinyusb · GitHub (at github.com) | 04:07 |
| mithro | tannewt: can we just start with polling? | 04:07 |
| tannewt | sure we can hack it | 04:08 |
| tannewt | https://github.com/mithro/tinyusb/blob/develop/src/device/usbd.c#L306 | 04:09 |
| tpb | Title: tinyusb/usbd.c at develop · mithro/tinyusb · GitHub (at github.com) | 04:09 |
| tannewt | I think thats where you'd want to add a call to fake the interrupt | 04:09 |
| mithro | tannewt: Just trying to get back to a working bios so I don't have to rebuild gateware every time I updated tinyusb | 04:19 |
| cr1901_modern | mithro: Not sure how I should go about this... this is a litex/misoc-specific feature, so prob easiest to generate a script to reinitialize the bram and run that. | 04:21 |
| cr1901_modern | if reinit_bram=True or something | 04:21 |
| mithro | cr1901_modern: maybe a "make firmware-patch" ? | 04:35 |
| cr1901_modern | hmmm, that prob works, but you'd need to also run a make target before hand w/ zero-initialized BRAM too. | 04:40 |
| mithro | I wish I could turn off SOF tokens.... | 05:21 |
| mithro | tannewt: In the isr what functions should I be doing? | 05:29 |
| tannewt | first is dcd_setup_received | 05:49 |
| tannewt | mithro, did you take a look at the porting guide? | 05:50 |
| mithro | which one? | 05:50 |
| mithro | Did you update it? | 05:50 |
| tannewt | https://github.com/hathach/tinyusb/blob/develop/doxygen/porting.md | 05:50 |
| tpb | Title: tinyusb/porting.md at develop · hathach/tinyusb · GitHub (at github.com) | 05:50 |
| tannewt | yup yesterday | 05:50 |
| mithro | Ha | 05:51 |
| mithro | I hadn't reloaded... | 05:51 |
| tannewt | :-) | 05:51 |
| tannewt | merged this morning | 05:51 |
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| mithro | Should %hhu give ma a print of a uint8_t ? | 06:21 |
| mithro | https://www.irccloud.com/pastebin/fyXYNxYv/ | 06:23 |
| tpb | Title: Snippet | IRCCloud (at www.irccloud.com) | 06:23 |
| mithro | start xfer d:1 e:0 l:0 | 06:25 |
| mithro | why am I getting a zero length transfer? | 06:25 |
| tannewt | @mithro is that in? it is used for control status phase | 06:46 |
| mithro | tannewt: Hrm? | 06:52 |
| tannewt | whats the direction of the zero length packet? | 06:53 |
| mithro | https://www.beyondlogic.org/usbnutshell/usb4.shtml#Control | 06:54 |
| tpb | Title: USB in a NutShell - Chapter 4 - Endpoint Types (at www.beyondlogic.org) | 06:54 |
| mithro | OUT: If the host sent OUT token(s) during the data stage to transmit data, the function will acknowledge the successful receipt of data by sending a zero length packet in response to an IN token. However if an error occurred, it should issue a STALL or if it is still busy processing data, it should issue a NAK asking the host to retry the status phase later. | 06:54 |
| tannewt | right, is that not happening for you? | 07:02 |
| mithro | tannewt: I'm adding a test case for it now | 07:02 |
| mithro | tannewt: I didn't have a way to send zero length packets previously.... | 07:52 |
| tannewt | ah! get it going? | 07:53 |
| mithro | hrm... | 08:05 |
| mithro | https://www.irccloud.com/pastebin/L9dO5OZr/ | 08:05 |
| tpb | Title: Snippet | IRCCloud (at www.irccloud.com) | 08:05 |
| mithro | hrm... | 08:57 |
| mithro | <artificial>:(.text.dcd_poll.constprop.18+0xa0): undefined reference to `memset' | 08:57 |
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| mithro | That is very weird | 09:06 |
| mithro | I had to set memset as "__attribute__((used))" | 09:06 |
| cr1901_modern | what the ._.? | 09:07 |
| cr1901_modern | Weird | 09:07 |
| cr1901_modern | mithro: Brain's kinda fried atm, I'll finish the bram upload when I wake up | 09:07 |
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| mithro | tannewt: I am pretty sure the hardware is working but I can't get tinyusb to work | 17:41 |
| mithro | Would you be able to give it a bit? | 17:41 |
| mithro | Target=usb | 17:42 |
| mithro | tannewt: I think we are taking to long to respond, so the host is resetting things | 18:04 |
| mithro | I need to reenable the instruction cache | 18:04 |
| daveshah | mithro: alternative option is to copy code to spram at startup | 18:09 |
| mithro | daveshah: currently still working on the bx | 18:09 |
| daveshah | Ah, I see | 18:10 |
| daveshah | I'm too excited about finally having a bootloader for the UP5k :P | 18:12 |
| tannewt | mithro: I should have time this evening to look | 18:14 |
| mithro | daveshah: Should be pretty easy once the tinyfpga-bx works | 18:20 |
| daveshah | Sure | 18:26 |
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| CarlFK | who is our local qemu x86 expert? http://imgr.sytes.net/a/qemu_spec1.png Spectre V2: Spectre mitigation: LFENCE not serializing, switching to generic retpoline | 22:58 |
| CarlFK | shorne: ^^ | 23:40 |
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