Hi Maynard, On 1/26/2019 10:07 AM, Maynard Cabiente wrote: > Hi Minas, > > On Fri, Jan 25, 2019 at 2:54 AM Minas Harutyunyan > <minas.harutyunyan@xxxxxxxxxxxx> wrote: >> Besides, mentioned by you timestamp <23.918 564 900>, where BULK IN data >> messed between EP1IN and EP2IN, I found in USB trace one more invalid >> traffic packets sequence. See in trace at timestamp <24.169 347 217>: on >> same EP1 to CBW (Mode Sense) command 31 bytes, device reply as IN data >> 128 bytes and first 31 bytes are SAME from CBW. That mean buffer pointer >> set incorrectly EP1IN pointer set to EP1OUT pointer. In case of DDMA >> buffer pointer is descriptor pointer. >> >> Difference between this 2 cases: >> 1. When EP different (your case) SCSI Tag's also different this is why >> class driver issue reset. >> 2. When EP same then (my case) SCSI Tag's are same, just wrong data from >> class driver point of view, and later class driver again send Mode Sense >> command which completed OK and no reset initiated. >> > > I looked at the timestamp you mentioned <24.169 347 217> and this is > actually not an issue. Our device failed the Mode Sense command in > this case (for some reason) as you can see in the CSW Status (Command > Failed). The data that was sent was just garbage as it will not be > read by the USB Host Controller because of the CSW result. > >> I not found yet where from come this bug. >> >> Meanwhile, could you please: >> 1. Test same scenario in BDMA mode >> Just edit params.c file: to set g_dma_desc from true to false. >> p->g_dma_desc = false; > > I encountered the same issue with BDMA mode several times. > >> 2. Provide me full debug messages log for DDMA around when the issue seen. >> It's not core bug it's dwc2 bug. >> > > I sent the USB trace with the full debug messages for DDMA directly to > your e-mail as it is huge again. I hope it helps. > >> 3. One more request, please send me GHWCFG1-4 registers value for your core. > > GHWCFG1=0x00000000 > GHWCFG2=0x238ffc90 > GHWCFG3=0x1f8002e8 > GHWCFG4=0xfe0f0020 > > Regards, > Maynard > Please send me regdump. Thanks, Minas
