Markus Rechberger a écrit : > On 9/13/07, David & Anne-Sophie <[EMAIL PROTECTED]> wrote: > >> Markus Rechberger a écrit : >> >>> On 9/12/07, David & Anne-Sophie <[EMAIL PROTECTED]> wrote: >>> >>> >>>> Markus Rechberger a écrit : >>>> >>>> >>>>> On 9/11/07, David & Anne-Sophie <[EMAIL PROTECTED]> wrote: >>>>> >>>>> >>>>> >>>>>> Markus Rechberger a écrit : >>>>>> >>>>>> >>>>>> >>>>>>> On 9/10/07, David & Anne-Sophie <[EMAIL PROTECTED]> wrote: >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>>> David & Anne-Sophie a écrit : >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>>> Hello all, >>>>>>>>> I am trying to use my hybrid USB tuner on my NSLU2. >>>>>>>>> Tuner=Terratec cinergy XS >>>>>>>>> Driver=http://mcentral.de/wiki/index.php/Em2880 >>>>>>>>> I plugged it directly to the DISK-2 connector. On DISK-1 there is a >>>>>>>>> >>>>>>>>> >>>> USB >>>> >>>> >>>>>>>>> hard-disk that contains the filesystems. >>>>>>>>> >>>>>>>>> The driver compiles fine on the standard debian etch kernel, and >>>>>>>>> >> loads >> >>>>>>>>> perfectly. >>>>>>>>> I just did a minor patch of this driver around a udelay(2500); -> >>>>>>>>> udelay(2000);udelay(500); (2500 is a too big value for the ARM >>>>>>>>> architecture, see bad_udelay). >>>>>>>>> >>>>>>>>> When I try tzap to activate the dvb-t stream, I get those errors: >>>>>>>>> ehci_hcd 0000:00:01.2: alloc_safe_buffer: could not alloc dma memory >>>>>>>>> (size=36096) >>>>>>>>> ehci_hcd 0000:00:01.2: map_single: unable to map unsafe buffer >>>>>>>>> >>>>>>>>> >>>> ffc2c000! >>>> >>>> >>>>>>>>> many times (I think one per USB packet). >>>>>>>>> And the tuner does not stream anything... >>>>>>>>> >>>>>>>>> I did not modify anything in the NSLU2 (neither RAM or frequency), >>>>>>>>> >>>>>>>>> >>>> just >>>> >>>> >>>>>>>>> upgraded to debian etch arm architecture following the >>>>>>>>> >> nslu2-linux.org >> >>>>>>>>> tutorials. >>>>>>>>> Do you know what it means and how to solve the issue? >>>>>>>>> Do not hesitate to ask for specific information. >>>>>>>>> >>>>>>>>> Thanks! >>>>>>>>> Cheers, >>>>>>>>> David. >>>>>>>>> [EMAIL PROTECTED] >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Em28xx mailing list >>>>>>>>> Em28xx@mcentral.de >>>>>>>>> http://mcentral.de/mailman/listinfo/em28xx >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>> I have some informations that can help you to resolve my problem. >>>>>>>> >> These >> >>>>>>>> informations comes from the newlist of debian-arm : >>>>>>>> In this forum, I said that the driver works correctly on a PC with >>>>>>>> ubuntu, and the response is : >>>>>>>> "Working on a PC does not mean the driver is correct. On a PC >>>>>>>> >> physical >> >>>>>>>> addresses match the kernel's point of view in general, while on the >>>>>>>> >> arm >> >>>>>>>> everything goes through interesting mappings, which make is essential >>>>>>>> for the driver to correctly use readX/writeX calls along with ioremap >>>>>>>> calls. Any attemps to directly access anything will fail on the arm >>>>>>>> while it almost always works on a PC. Not sure quite how that might >>>>>>>> impact a USB device, but even there the driver has to do DMA setup >>>>>>>> >> with >> >>>>>>>> corrected addresses, which again is not necesary on a PC but is on >>>>>>>> >> the >> >>>>>>>> arm. " >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>> i'm at the suse conference this week there are some interesting people >>>>>>> around who're into the usb subsystem. >>>>>>> The em28xx driver makes use of the usb subsystem (which also includes >>>>>>> allocation of memory) >>>>>>> I'll try to get some answers tomorrow about this issue. >>>>>>> >>>>>>> Markus >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>> Hello Markus, >>>>>> >>>>>> Do you have news about my problem ? >>>>>> >>>>>> >>>>>> >>>>> in em28xx.h there's a static defined value for the number of >>>>> >> videopackets >> >>>>> #define EM28XX_NUM_PACKETS 40 >>>>> >>>>> try to lower that value by about the half or less this will allocate >>>>> less memory in the end. I'm not sure if that might out .. although >>>>> that was the only idea which came up after the talk yesterday. Let me >>>>> know if it works out otherwise I'll have a further discussion about it >>>>> with the usb guys. >>>>> >>>>> Markus >>>>> >>>>> >>>>> >>>>> >>>>> >>>> Hello Markus, >>>> >>>> I tried your patch. I set the value to 20. Now tzap seems to work >>>> correctly (tzap -r -c channels.conf "TF1", for exemple) and I don't have >>>> any error with dmesg. But, when i try cat / /dev/dvb/adapter0/dvr0 > >>>> test.ts/, the file is still empty ? and with cp /dev/dvb/adapter0/dvr0 >>>> foo, the command doesn't leave immediatly, I must break the command to >>>> leave ? >>>> Do you have an idea ? >>>> >>>> >>> Could you try to dump the stream with mplayer? >>> If this doesn't work out we'll add some debug for the usb packets. I >>> only have 2 days left to discuss this issue with the right guys here. >>> >>> Markus >>> >>> >>> >>> >> Sorry, but it is impossible to use mplayer on a nslu2. It doesn't have a >> video card. I have only a ssh connection. >> You can see some informations about it here : http://www.nslu2-linux.org/ >> For information, the scan command doesn't work too. >> >> > > The scan command is sufficient. > Could you load the em28xx driver with reg_debug=1 and try to scan for > channels with scan -vvv <frequencymap> > > Thanks, > Markus > > >
With the scan command, it doesn't find a valid list (I try it on ubuntu and it works) : For example : >>> tune to: 482000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_AUTO:FEC_AUTO:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_AUTO:HIERARCHY_NONE WARNING: filter timeout pid 0x0011 WARNING: filter timeout pid 0x0000 WARNING: filter timeout pid 0x0010 But no result ? See dmesg informations : DIGITAL TV REQUEST scan: page allocation failure. order:4, mode:0x1 Mem-info: DMA per-cpu: cpu 0 hot: high 6, batch 1 used:5 cpu 0 cold: high 2, batch 1 used:0 DMA32 per-cpu: empty Normal per-cpu: empty HighMem per-cpu: empty Free pages: 740kB (0kB HighMem) Active:4051 inactive:1007 dirty:279 writeback:0 unstable:0 free:185 slab:913 map ped:1468 pagetables:173 DMA free:740kB min:724kB low:904kB high:1084kB active:16204kB inactive:4028kB pr esent:32768kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 DMA32 free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB page s_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 Normal free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB pag es_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 HighMem free:0kB min:128kB low:128kB high:128kB active:0kB inactive:0kB present: 0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 DMA: 7*4kB 39*8kB 11*16kB 5*32kB 1*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048k B 0*4096kB = 740kB DMA32: empty Normal: empty HighMem: empty Swap cache: add 2332, delete 2173, find 267/374, race 0+0 Free swap = 90764kB Total swap = 96348kB Free swap: 90764kB 8192 pages of RAM 356 free pages 753 reserved pages 913 slab pages 7013 pages shared 159 pages swap cached You have enought informations ? Thanks David _______________________________________________ Em28xx mailing list Em28xx@mcentral.de http://mcentral.de/mailman/listinfo/em28xx
