**** BEGIN LOGGING AT Sat Jun 07 02:59:59 2014
Jun 07 09:36:10 <Abhishek_> karki_: Are mmaps working for you?
Jun 07 11:41:07 <karki_> Abhishek1 : never had a chance to check it out, BBB is not booting since yesterday. I have wasted one whole day trying to get this damn thing to boot. I'm *this* far away from burning that thing. Arhh...
Jun 07 11:49:51 <Abhishek1> so even flashing a new SD image isn't helping you there?
Jun 07 11:51:03 <karki_> I DOESN'T boot, (not even the MLO maybe), no led flashes, no serial output. no nothing :/
Jun 07 12:43:22 <karki_> :'(
Jun 07 13:11:15 * karki_ gives up!
Jun 07 13:13:35 <vvu> karki_: get one day off
Jun 07 13:13:52 <vvu> i am working on free days also
Jun 07 13:15:48 <vvu> i will start 2morrow wokring back on flasher if you guys need it :)
Jun 07 13:16:29 * karki_ doesn't want an off day, he needs a working BBB
Jun 07 13:16:35 * karki_ :'(
Jun 07 13:49:38 <karki_> I tried reflashing anyway, still not helpful.....
Jun 07 16:57:00 <karki_> heh, now weirdly enough the two led's in the eth jsck remain lit up along with the power led. None of the 4 user led's even flinch
Jun 07 16:57:08 <karki_> *jack
Jun 07 17:58:39 <karki_> Abhishek1 : did you get the mmap working?
Jun 07 17:58:59 <Abhishek1> not yet, currently implementing the API fo PRU syscalls
Jun 07 17:59:04 <Abhishek1> *for
Jun 07 17:59:21 <Abhishek1> and downcalls
Jun 07 18:01:27 <karki_> API for downcalls ?
Jun 07 18:01:36 <karki_> on the driver side?
Jun 07 18:01:43 <Abhishek1> yep
Jun 07 18:02:30 <Abhishek1> not many commands.
Jun 07 18:05:12 <Abhishek1> I am able to receive a stream of interrupts from the PRUs (my kernel logs almost overflowed :P)
Jun 07 18:07:04 <karki_> have a look at this, my mmap is successful, I've given a valid physical address to map to, there is a virtual address generated, but finally if I check the resulting physical arrd that has  been mapped, it shows it as zero!
Jun 07 18:07:20 <karki_> *addr
Jun 07 18:07:48 <karki_> weird thing is that everything is successful
Jun 07 18:11:53 * Abhishek1 knows that his PRU0 code is going to be a cocktail of C and Assembly now
Jun 07 19:15:09 <karki_> how would you explicitly make mmap map a physical address range "X" to "Y" into userspace?
Jun 07 19:16:30 <alexanderhiam> karki: offset=X size=Y-X
Jun 07 19:16:43 <alexanderhiam> karki_* ^
Jun 07 19:18:16 <karki_> alexanderhiam : in this fn ? "remap_pfn_range"
Jun 07 19:19:36 <alexanderhiam> oh, you're in kernel space?
Jun 07 19:20:10 <karki_> yep
Jun 07 19:20:53 <karki_> I have a pre allocated chunk of memory that I want to export to userspace.
Jun 07 19:21:30 <karki_> alexanderhiam : So I want to know how to create a mapping to the chunk I already have!
Jun 07 19:23:27 <alexanderhiam> ah ok, I've never done that... but looking at the remap_pfn_range docs it looks like the 2nd arg is the start address and the 4th arg is the size
Jun 07 19:24:02 <alexanderhiam> oh wait that's not right
Jun 07 19:25:41 <alexanderhiam> the 3rd argument is the page frame number to start the map at
Jun 07 19:27:49 <karki_> I did that and ended up getting weird results. The tutorials are messed up. Some sources contradict each other. I'm trying everything one by one.
Jun 07 19:28:01 <karki_> It's bcome more of a game of chance now ;)
Jun 07 19:31:33 * alexanderhiam hasn't worked with this stuff enough to be of much help here
Jun 07 19:39:07 <Abhishek1> mranostay: is the syntax of CLPRU inline assembly the same as that of GCC?
Jun 07 20:05:01 <mranostay> Abhishek1: should be
Jun 07 20:06:35 <Abhishek1> mranostay: I read up some more TI Assembler docs, it seems that it inserts the asm string verbatim, and it seems that there isn't a mechanism of giving the underlying registers of function arguments.
Jun 07 20:08:41 <Abhishek1> so, writing the appropriate function as a separate .asm file now.
Jun 07 20:11:39 <Abhishek1> mranostay: btw, how many miles biked this week?
Jun 07 21:12:35 <mranostay> Abhishek1: only 60
Jun 07 21:12:49 <mranostay> Abhishek1: naked bike ride tonight so probably add another 20
Jun 07 21:13:56 <Abhishek1> isn't it cold out there?
Jun 07 21:17:25 <mranostay> Abhishek1: 24C today
Jun 07 21:18:03 <mranostay> a few thousand bike riders will probably warm up a small area
Jun 07 21:18:53 <Abhishek1> I see
Jun 07 21:19:01 <mranostay> Abhishek1: ironically public nudity is legal in Oregon but only as a protest
Jun 07 21:30:54 * vvu will run out of internet soon...so bad to live somewhere with time-limited internet
Jun 07 21:36:14 <_av500_> vvu: no cheap 3g?
Jun 07 21:36:27 <_av500_> or aircrack the neighbours wifi
Jun 07 22:05:49 <Abhishek1> g'night channel
Jun 07 23:19:52 <mranostay> hehe
**** ENDING LOGGING AT Sun Jun 08 02:59:59 2014