On 01/13/16 07:17, Mark Johnston wrote:
On Wed, Jan 13, 2016 at 07:17:04AM +0100, Hans Petter Selasky wrote:
On 01/13/16 07:04, Mark Johnston wrote:
On Mon, Jan 11, 2016 at 09:41:01AM +0100, Hans Petter Selasky wrote:
On 01/10/16 05:07, Mark Johnston wrote:
Hi,

I have the module listed here:
http://www.amazon.com/KEDSUM%C2%AE-CP2102-Module-Download-Converter/dp/B009T2ZR6W

Under Windows 8 it works perfectly, but on FreeBSD-CURRENT I get:

usb_alloc_device: set address 3 failed (USB_ERR_STALLED, ignored)
usbd_setup_device_desc: getting device descriptor at addr 3 failed, 
USB_ERR_STALLED
usbd_req_re_enumerate: addr=3, set address failed! (USB_ERR_STALLED, ignored)
usbd_setup_device_desc: getting device descriptor at addr 3 failed, 
USB_ERR_STALLED
usbd_req_re_enumerate: addr=3, set address failed! (USB_ERR_STALLED, ignored)
usbd_setup_device_desc: getting device descriptor at addr 3 failed, 
USB_ERR_STALLED
usbd_req_re_enumerate: addr=3, set address failed! (USB_ERR_STALLED, ignored)
usbd_setup_device_desc: getting device descriptor at addr 3 failed, 
USB_ERR_STALLED
usbd_req_re_enumerate: addr=3, set address failed! (USB_ERR_STALLED, ignored)
usbd_setup_device_desc: getting device descriptor at addr 3 failed, 
USB_ERR_STALLED
ugen1.3: <Unknown> at usbus1 (disconnected)
uhub_reattach_port: could not allocate new device

It looks like this device should be handled by uslcom(4), but it looks
like we can't even get the device descriptor. How can I go about
debugging this?

Hi,

What does "usbconfig" say about your USB controllers?

Did you try to connect through an external USB HUB?

No, I don't have one handy. usbconfig shows:

ugen0.1: <XHCI root HUB 0x8086> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) 
pwr=SAVE (0mA)
ugen1.1: <EHCI root HUB Intel> at usbus1, cfg=0 md=HOST spd=HIGH (480Mbps) 
pwr=SAVE (0mA)
ugen2.1: <EHCI root HUB Intel> at usbus2, cfg=0 md=HOST spd=HIGH (480Mbps) 
pwr=SAVE (0mA)


Could you show what "pciconf -lv" says about xhci0. Sometimes you need
to set a special routing register before some XHCI controllers work!

xhci0@pci0:0:20:0:      class=0x0c0330 card=0x84ca1043 chip=0x1e318086 rev=0x04 
hdr=0x00
     vendor     = 'Intel Corporation'
     device     = '7 Series/C210 Series Chipset Family USB xHCI Host Controller'
     class      = serial bus
     subclass   = USB

I'm plugging the module into the first EHCI controller though - it's a
USB 2.0 device.


In src/sys/dev/usb/controller/xhci_pci.c you can try adding the PCI chip ID to the following list:

        case 0x0f358086:        /* BayTrail */
        case 0x9c318086:        /* Panther Point */
        case 0x1e318086:        /* Panther Point */
        case 0x8c318086:        /* Lynx Point */
        case 0x8cb18086:        /* Wildcat Point */
        case 0x9cb18086:        /* Broadwell Mobile Integrated */
                /*
                 * On Intel chipsets, reroute ports from EHCI to XHCI
                 * controller and use a different IMOD value.
                 */


--HPS
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