Date: Fri, 25 Apr 2008 18:49:10 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: "Xiaofan Chen" <xiaofanc@gmail.com> Cc: freebsd-usb@freebsd.org Subject: Re: PICDEM FS USB Bootloader under FreeBSD Message-ID: <200804251849.11283.hselasky@c2i.net> In-Reply-To: <a276da400804250659t7b413c60ib9974d2c19c1d3e4@mail.gmail.com> References: <a276da400710120806k636347eew876ee0fb3fc17ab3@mail.gmail.com> <a276da400804241956r3a7759bp298c76ccdaf8eb76@mail.gmail.com> <a276da400804250659t7b413c60ib9974d2c19c1d3e4@mail.gmail.com>
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Hi, 1) Try to get debugging from USB instead of OHCI. sysctl hw.usb.ohci.debug=0 sysctl hw.usb.debug=15 Retry. 2) Patch /sys/dev/usb/ugen.c Change all lines looking like the following, that are not in a function named "xxx_callback": sce->read_stall = 1; sce->write_stall = 1; Into: sce->read_stall = 0; sce->write_stall = 0; Recompile ugen an try again. My analysis so far: The USB device refuses a control transfer, possibly the clear-stall request: ohci_setup_standard_chain: addr=2 endpt=0 sumlen=8 speed=2 ohci_setup_standard_chain: nexttog=1; data before transfer: TD(0xc4d6b600) at 0x0b06d600: -TOG0 delay=7 ec=0 cc=15 cbp=0x13ceb210 next=0x0b06d700 be=0x13ceb217 TD(0xc4d6b700) at 0x0b06d700: -R-IN-TOG1 delay=1 ec=0 cc=15 cbp=0x00000000 next=0x00000000 be=0xffffffff _ohci_append_qh: 0xc4d6b680 to 0xc4071980 ohci_check_transfer: xfer=0xc4f61140 checking transfer ohci_non_isoc_done: xfer=0xc4f61140 pipe=0xc4ee81b0 transfer done TD(0xc4d6b600) at 0x0b06d600: -TOG1 delay=7 ec=0 cc=0 cbp=0x00000000 next=0x00000000 be=0x13ceb217 ohci_device_done: xfer=0xc4f61140, pipe=0xc4ee81b0, error=22 The OHCI wants to receive 4 bytes from endpoint 1, but does never get those bytes. The transfer times out. ohci_setup_standard_chain: addr=2 endpt=1 sumlen=4 speed=2 ohci_setup_standard_chain: nexttog=0; data before transfer: TD(0xc4d6b380) at 0x0b06d380: -R-IN-TOG0 delay=1 ec=0 cc=15 cbp=0x13d12140 next=0x00000000 be=0x13d12143 _ohci_append_qh: 0xc4d6b400 to 0xc4071900 ohci_timeout: xfer=0xc4f51070 ohci_device_done: xfer=0xc4f51070, pipe=0xc4ee81d8, error=20 --HPS
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