Hi,
(1)
I made some tests after I posted the following and
in short, the problem still exists after I changed
HCI_MAX_BULK_TX from 4 to 1
note : "uhci.o" could not be tried because "ohci.o"
is the USB host driver in our case.
(2)
For me, the worst thing is that l2cap channel connection
can not be connected once "ACL tx timeout" occurs.
Infrequent occurrence of "ACL tx timeout" could be
acceptable.
To make it recoverable, I am wodering upgrading firmware might
be helpful or not. (Below shows hciconfig result for the dongle.)
BlueFW can't be used for CSR case, correct ? ( it is available only for BCM .
?.)
the posting by Carl (as of Mar.30 2003) regarding FW
change lead me some confusion. We bought BT-dongles from
Mitsumi which actually use CSR chip, but did not directly
from CSR. Does anyone know how we can upgrade FW on
such commercial BT dongles ?
hci1: Type: USB
BD Address: 00:A0:96:1F:D5:29 ACL MTU: 128:8 SCO MTU: 64:8
UP RUNNING PSCAN ISCAN
RX bytes:338271 acl:2686 sco:0 events:5768 errors:0
TX bytes:457198 acl:5294 sco:0 commands:223 errors:0
Features: 0xff 0xff 0x05 0x00
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy:
Link mode: ACCEPT MASTER
Name: 'CSR - bc01b'
Class: 0x000000
Service Classes: Unspecified
Device Class: Miscellaneous,
HCI Ver: 1.1 (0x1) HCI Rev: 0x72 LMP Ver: 1.1 (0x1) LMP Subver: 0x72
Manufacturer: Cambridge Silicon Radio (10)
Any suggestion could be helpful for us.
Thanks
Takayuki Kaiso
Thinktube Ltd.,
+81-78-857-8390
Takayuki Kaiso wrote:
> Hi, Max and Ferenc
>
> I have been troubled with the same problem which Ferenc reported.
>
> In my case, an ACL link stalled after "a few hours" of normal connection (
> refer to (1) )
> and never recovered from this status until the dongle is removed and
> inserted again. ( refer to (2)). ( Kernel is 2.4.19 and 2.4.7 )
>
> I was suspecting that the CSR firmware got into the problematic state..
> The current firmware level is x72(11.2) and what do you think
> whether upgrading the firmware might be helpful or not.
>
> At first, I will follow what Max pointed in below, but if you have additional
> suggestion based on my information, please let me know.
>
> (1). Dongle-A reports "stalled ACL link" after a few hours connection
> Jun 25 11:52:52 turtle kernel: hci_acl_tx_to: hci1 ACL tx timeout
> Jun 25 11:52:52 turtle kernel: hci_acl_tx_to: hci1 killing stalled ACL
> connection
> 5C:D4:1F:96:A0:00
> Jun 25 11:52:52 turtle kernel: l2cap_disconn_ind: hcon c92d48c0 reason 22
> Jun 25 11:52:52 turtle kernel: l2cap_conn_del: hcon c92d48c0 conn c349c760,
> err 103
> Jun 25 11:52:52 turtle kernel: l2cap_sock_clear_timer: sock c7114700 state 1
> Jun 25 11:52:52 turtle kernel: l2cap_chan_del: sk c7114700, conn c349c760,
> err 103
> Jun 25 11:52:52 turtle kernel: pan0: port 1(bnep0) entering disabled state
> Jun 25 11:52:52 turtle kernel: pan0: port 1(bnep0) entering disabled state
> Jun 25 11:52:52 turtle kernel: device bnep0 left promiscuous mode
> Jun 25 11:52:52 turtle kernel: l2cap_sock_release: sock c87ba980, sk c7114700
> Jun 25 11:52:52 turtle kernel: l2cap_sock_clear_timer: sock c7114700 state 9
>
> (2) Dongle-A rejected CONN_REQ from other node (with Role-switch flag)
> Jun 25 12:19:25 turtle kernel: l2cap_connect_ind: hdev hci1, bdaddr
> 5C:D4:1F:96:A0:00
> Jun 25 12:19:25 turtle kernel: l2cap_connect_cfm: hcon c901bea0 bdaddr
> 5C:D4:1F:96:A0:00 status
> 0
> Jun 25 12:19:25 turtle kernel: l2cap_conn_add: hcon c901bea0 conn c349c320
> Jun 25 12:19:25 turtle kernel: l2cap_conn_ready: conn c349c320
> Jun 25 12:19:40 turtle kernel: l2cap_disconn_ind: hcon c901bea0 reason 22
> Jun 25 12:19:40 turtle kernel: l2cap_conn_del: hcon c901bea0 conn c349c320,
> err 103
>
> thanks in advance
> Taka
>
> > At 04:25 AM 6/20/2003, Ferenc-Jan wrote:
> > >I flashed the latest firmware into the dongles, compiled kernel &
> > >bluez mods (2.4.21-rc2, tried 2.5.70 too.)
> > >Works like a charm. However, sooner rather than later, I get a
> > > "hci0 ACL tx timeout, hci0 killing stalled ACL."
> > >
> > >After this, hciconfig -a ends halfway in a "can't read local name on hci0"
> > >until I unplug and reinsert the dongle.
> > Looks like USB problems to me. For some people it helps to switch from
> > usb-uhci.o to uhci.o.
> > Try if first.
> >
> > You can also try to decrease number of outstanding bulk TX requests.
> > In the file drivers/bluetooth/hci_usb.h
> > Replace
> > #define HCI_MAX_BULK_TX 4
> > with
> > #define HCI_MAX_BULK_TX 1
> > Recompile and reload hci_usb module.
> >
> > Does that help ?
> >
> > Max
> >
> >
> >
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