Date: Tue, 15 Jun 2004 23:41:08 +0900 From: Eitarou Kamo <e-kamo@trio.plala.or.jp> To: freebsd-hackers@freebsd.org, simon@comsys.ntu-kpi.kiev.ua Subject: umass0: CBI reset failed, Timeout.... 4.10-R Message-ID: <40CF0A84.1020807@trio.plala.or.jp>
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Hi,
I have some questions about umass and USB.
I installed 4.10-R to Sony vaio laptop. and rebooted
without any memory stick.
In boot process, my machine said that
umass0: CBI reset failed, TIMEOUT
umass0: CBI bulk-in stall clear failed, TIMEOUT
umass0: CBI bulk-out stall clear failed, TIMEOUT
5 times( about 20 min). and didn't prompt "login:".
and I look into source code by my debug print.
It seems that reflexive loop occurs between uhci_callout( , ,
uhci_poll_hub,)
and uhci_poll_hub(). Now uhci_callout is called from uhci_power(). and
uhci_poll_hub() have a path
if (p[0] == 0)
/* No change, try again in a while */
return;
If return here, loop occurs. Because uhci_poll_hub()
includes uhci_callout( , , uhci_poll_hub,).
Does anyone know? any idea?
Any suggestion will be appreciated.
++++++++++++++ unci_poll_hub()+++++++++++++++
void
uhci_poll_hub(void *addr)
{
usbd_xfer_handle xfer = addr;
usbd_pipe_handle pipe = xfer->pipe;
uhci_softc_t *sc = (uhci_softc_t *)pipe->device->bus;
int s;
u_char *p;
DPRINTFN(20, ("uhci_poll_hub\n"));
usb_callout(sc->sc_poll_handle, sc->sc_ival, uhci_poll_hub, xfer);
p = KERNADDR(&xfer->dmabuf, 0);
p[0] = 0;
if (UREAD2(sc, UHCI_PORTSC1) & (UHCI_PORTSC_CSC|UHCI_PORTSC_OCIC))
p[0] |= 1<<1;
if (UREAD2(sc, UHCI_PORTSC2) & (UHCI_PORTSC_CSC|UHCI_PORTSC_OCIC))
p[0] |= 1<<2;
if (p[0] == 0)
/* No change, try again in a while */
return;
xfer->actlen = 1;
xfer->status = USBD_NORMAL_COMPLETION;
s = splusb();
xfer->device->bus->intr_context++;
usb_transfer_complete(xfer);
xfer->device->bus->intr_context--;
splx(s);
}
++++++++++++++ unci_poll_hub()+++++++++++++++
--
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