Bug 10631 (Bluetooth_ACL_SCO) - Bluetooth ACL and SCO Links
Summary: Bluetooth ACL and SCO Links
Status: RESOLVED FIXED
Alias: Bluetooth_ACL_SCO
Product: hal
Classification: Unclassified
Component: hald (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: Luiz Augusto von Dentz
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Reported: 2007-04-12 14:55 UTC by Luiz Augusto von Dentz
Modified: 2007-04-22 21:21 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:


Attachments
Patch 1 of 1 (3.42 KB, patch)
2007-04-13 11:46 UTC, Luiz Augusto von Dentz
Details | Splinter Review
Patch 1 of 1 (3.20 KB, patch)
2007-04-17 13:40 UTC, Luiz Augusto von Dentz
Details | Splinter Review

Description Luiz Augusto von Dentz 2007-04-12 14:55:58 UTC
hald detects Bluetooth ACL (Asynchronous Connectionless Link) as Bluetooth Host Controller
Comment 1 Danny Kukawka 2007-04-13 05:23:13 UTC
Please provide lshal output and ls -lhaR from the device in sysfs. 
Comment 2 Luiz Augusto von Dentz 2007-04-13 10:25:44 UTC
It happens to SCO links too:

Hald output:

14:14:10.919 [I] osspec.c:226: SEQNUM=3118, ACTION=add, SUBSYSTEM=bluetooth, DEVPATH=/sys/class/bluetooth/hci0/sco001317E86857, DEVNAME=, IFINDEX=0
14:14:10.919 [I] hotplug.c:134: /sys/class/bluetooth/hci0/sco001317E86857 is a device (subsystem)
14:14:10.919 [I] osspec.c:781: hal_util_find_known_parent: '/sys/class/bluetooth/hci0/sco001317E86857'->'/sys/class/bluetooth/hci0'
14:14:10.919 [I] device.c:3395: add_dev: subsys=bluetooth sysfs_path=/sys/class/bluetooth/hci0/sco001317E86857 dev= parent_dev=0x080ab610
14:14:10.922 [I] device.c:3257: Add callouts completed udi=/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0_bluetooth_hci_bluetooth_hci
14:14:10.923 [I] hald.c:103: Added device to GDL; udi=/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0_bluetooth_hci_bluetooth_hci
Comment 3 Luiz Augusto von Dentz 2007-04-13 11:46:24 UTC
Created attachment 9597 [details] [review]
Patch 1 of 1

Prevent ACL and SCO Links to be announced as Bluetooth HCI.
Comment 4 David Zeuthen (not reading bugmail) 2007-04-16 10:54:53 UTC
The patch looks pretty good; three items

 - will need a patch for the docs as well; also, you don't need to set .physical_device - that's just some backwards stuff we're keeping for existing code since we decided to use the term "originating_device" instead of "physical_device" going forward.

 - what version of the kernel exports this?

 - also, can you attach lshal output of what this looks like?

Thanks!
Comment 5 Marcel Holtmann 2007-04-16 11:28:52 UTC
Starting with kernel 2.6.19 the bnepX devices are integrated with sysfs and the links to the ACL connections and the HCI devices are provided.
Comment 6 Luiz Augusto von Dentz 2007-04-16 14:12:46 UTC
lshal:

udi = '/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0_bluetooth_hci'
  bluetooth_hci.originating_device = '/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0'  (string)
  bluetooth_hci.physical_device = '/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0'  (string)
  info.capabilities = {'bluetooth_hci'} (string list)
  info.category = 'bluetooth_hci'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0'  (string)
  info.product = 'Bluetooth Host Controller Interface'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0_bluetooth_hci'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'bluetooth'  (string)
  linux.sysfs_path = '/sys/class/bluetooth/hci0'  (string)

udi = '/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0_bluetooth_hci_bluetooth_sco'
  bluetooth_sco.originating_device = '/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0_bluetooth_hci'  (string)
  bluetooth_sco.physical_device = '/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0_bluetooth_hci'  (string)
  info.capabilities = {'bluetooth_sco'} (string list)
  info.category = 'bluetooth_sco'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0_bluetooth_hci'  (string)
  info.product = 'Bluetooth Synchronous Connection-oriented Link'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0_bluetooth_hci_bluetooth_sco'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'bluetooth'  (string)
  linux.sysfs_path = '/sys/class/bluetooth/hci0/sco001317E86857'  (string)

udi = '/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0_bluetooth_hci_bluetooth_acl'
  bluetooth_acl.originating_device = '/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0_bluetooth_hci'  (string)
  bluetooth_acl.physical_device = '/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0_bluetooth_hci'  (string)
  info.capabilities = {'bluetooth_acl'} (string list)
  info.category = 'bluetooth_acl'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0_bluetooth_hci'  (string)
  info.product = 'Bluetooth Asynchronous Connection-oriented Link'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_a12_1_noserial_if0_bluetooth_hci_bluetooth_acl'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'bluetooth'  (string)
  linux.sysfs_path = '/sys/class/bluetooth/hci0/acl001317E86857'  (string)
Comment 7 Luiz Augusto von Dentz 2007-04-17 13:40:45 UTC
Created attachment 9642 [details] [review]
Patch 1 of 1

Remove deprecated physical_device for bluetooth_acl and bluetooth_sco.
Comment 8 David Zeuthen (not reading bugmail) 2007-04-22 19:29:28 UTC
I committed that patch with this one on top
 http://gitweb.freedesktop.org/?p=hal.git;a=commitdiff;h=f849652ff11b22b8685c9bd4728e8eb2299a4c96

Here's a snippet of lshal to sho the new properties

udi = '/org/freedesktop/Hal/devices/usb_device_5ac_8205_noserial_if0_bluetooth_hci_16cb0c24e6'
  bluetooth_hci.address = 97895851238  (0x16cb0c24e6)  (uint64)
  bluetooth_hci.originating_device = '/org/freedesktop/Hal/devices/usb_device_5ac_8205_noserial_if0'  (string)
  info.capabilities = {'bluetooth_hci'} (string list)
  info.category = 'bluetooth_hci'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_5ac_8205_noserial_if0'  (string)
  info.product = 'Bluetooth Host Controller Interface'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_5ac_8205_noserial_if0_bluetooth_hci_16cb0c24e6'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'bluetooth'  (string)
  linux.sysfs_path = '/sys/class/bluetooth/hci0'  (string)

udi = '/org/freedesktop/Hal/devices/bluetooth_acl_50f2e9011e'
  bluetooth_acl.address = 347672740126  (0x50f2e9011e)  (uint64)
  bluetooth_acl.originating_device = '/org/freedesktop/Hal/devices/usb_device_5ac_8205_noserial_if0_bluetooth_hci_16cb0c24e6'  (string)
  info.capabilities = {'bluetooth_acl'} (string list)
  info.category = 'bluetooth_acl'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_5ac_8205_noserial_if0_bluetooth_hci_16cb0c24e6'  (string)
  info.product = 'Bluetooth Asynchronous Connection-oriented Link'  (string)
  info.udi = '/org/freedesktop/Hal/devices/bluetooth_acl_50f2e9011e'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'bluetooth'  (string)
  linux.sysfs_path = '/sys/class/bluetooth/hci0/acl0050F2E9011E'  (string)

udi = '/org/freedesktop/Hal/devices/bluetooth_acl_50f2e9011e_logicaldev_input'
  info.capabilities = {'input', 'input.mouse'} (string list)
  info.category = 'input'  (string)
  info.parent = '/org/freedesktop/Hal/devices/bluetooth_acl_50f2e9011e'  (string)
  info.product = 'Microsoft Five Button Mouse'  (string)
  info.udi = '/org/freedesktop/Hal/devices/bluetooth_acl_50f2e9011e_logicaldev_input'  (string)
  input.device = '/dev/input/event9'  (string)
  input.originating_device = '/org/freedesktop/Hal/devices/bluetooth_acl_50f2e9011e'  (string)
  input.physical_device = '/org/freedesktop/Hal/devices/bluetooth_acl_50f2e9011e'  (string)
  input.product = 'Microsoft Five Button Mouse'  (string)
  linux.device_file = '/dev/input/event9'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'input'  (string)
  linux.sysfs_path = '/sys/class/input/input15/event9'  (string)

Thanks.
Comment 9 David Zeuthen (not reading bugmail) 2007-04-22 20:32:37 UTC
Btw, for device object of bluetooth_acl and bluetooth_sco we should probably show some more information a'la

# hcitool info 00:50:F2:E9:01:1E
Requesting information ...
        BD Address:  00:50:F2:E9:01:1E
        Device Name: Microsoft Mouse
        LMP Version: 1.2 (0x2) LMP Subversion: 0x100
        Manufacturer: Broadcom Corporation (15)
        Features: 0xbc 0x02 0x04 0x28 0x08 0x08 0x00 0x00
                <encryption> <slot offset> <timing accuracy> <role switch> 
                <sniff mode> <RSSI> <power control> <enhanced iscan> 
                <interlaced pscan> <AFH cap. slave> <AFH cap. master> 


What's the best way to do this? Is it going to cause lots of network traffic to retrieve this or is it already cache by the kernel/Bluez? Thanks. I'll look at the other patch (bug 10577 tomorrow).
Comment 10 Marcel Holtmann 2007-04-22 21:21:45 UTC
Information like this are possible and can be retrieved via D-Bus. However I plan to make them available through sysfs, too. Currently the kernel retrieves only the information it really needs. In the future this will change.


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