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Date: Fri, 24 Apr 2015 14:39:54 -0400
From: Adam Goode <adam@...cenitz.org>
To: Andreas Noever <andreas.noever@...il.com>
Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Matthew Garrett <mjg59@...f.ucam.org>
Subject: Re: Thunderbolt hotplug not working on MacMini7,1
On Fri, Apr 24, 2015 at 7:46 AM, Andreas Noever
<andreas.noever@...il.com> wrote:
> On Fri, Apr 24, 2015 at 6:50 AM, Adam Goode <adam@...cenitz.org> wrote:
>> On Thu, Apr 23, 2015 at 1:15 PM, Adam Goode <adam@...cenitz.org> wrote:
>>> On Thu, Apr 23, 2015 at 12:12 PM, Andreas Noever
>>> <andreas.noever@...il.com> wrote:
>>>> On Thu, Apr 23, 2015 at 5:10 PM, Adam Goode <adam@...cenitz.org> wrote:
>>>>> On Thu, Apr 23, 2015 at 9:28 AM, Adam Goode <adam@...cenitz.org> wrote:
>>>>>>
>>>>>> On Thu, Apr 23, 2015 at 6:08 AM, Andreas Noever
>>>>>> <andreas.noever@...il.com> wrote:
>>>>>> > Hi Adam,
>>>>>> >
>>>>>> > On my system (MacBookPro10,1 - 4 channel TB1) the bridges and the
>>>>>> > controller both use 0x1547 and are only differentiated by
>>>>>> > subvendor/subdevice.
>>>>>> >
>>>>>> > 0x156c is the 4 channel TB2 controller and was originally added by
>>>>>> > Matthew. Judging from his patch it looks like the subvendor/subdevice
>>>>>> > is set on his system:
>>>>>> > http://patchwork.ozlabs.org/patch/354626/
>>>>>> >
>>>>>> > But it also indicates that the bridges already use different ids. If
>>>>>> > that is the case then we can drop the subvendor/subdevice for 0x156c.
>>>>>> > Matthew can you confirm that on your system 0x156c is used only for
>>>>>> > the controller?
>>>>>> >
>>>>>> > Adam, could you check that suspend/resume works properly? Also your
>>>>>> > bugzilla report suggest that hotplug might now work without the
>>>>>> > driver. Could you try to revert the _OSI check (and disable the
>>>>>> > driver) and check whether everything "just works"?
>>>>>> >
>>>>>>
>>>>>> In _OSI("Darwin") mode, suspend/resume doesn't work. It failed to come
>>>>>> back from suspend.
>>>>>>
>>>>>> I have to rebuild the kernel and remove Darwin again, but I will test
>>>>>> suspend/resume in "Windows 2012" mode later.
>>>>>>
>>>>>> From previous testing, hotplug doesn't automatically work in "Windows
>>>>>> 2012" mode. It exhibits the standard no-driver behavior where devices
>>>>>> are not detected after boot. But even in "Windows 2012" mode I still
>>>>>> do get the 0x156c device, which I think used to be hidden if !Darwin.
>>>>>>
>>>>>> More testing coming...
>>>>>>
>>>>>
>>>>> I've booted into _OSI(Windows 2012) mode. I am not physically at the
>>>>> device right now, but here is the current dmesg with 1 thunderbolt
>>>>> device plugged in:
>>>>>
>>>>> [ 15.576766] thunderbolt 0000:06:00.0: NHI initialized, starting thunderbolt
>>>>> [ 15.577868] thunderbolt 0000:06:00.0: allocating TX ring 0 of size 10
>>>>> [ 15.578939] thunderbolt 0000:06:00.0: allocating RX ring 0 of size 10
>>>>> [ 15.580008] thunderbolt 0000:06:00.0: control channel created
>>>>> [ 15.581068] thunderbolt 0000:06:00.0: control channel starting...
>>>>> [ 15.582122] thunderbolt 0000:06:00.0: starting TX ring 0
>>>>> [ 15.583173] thunderbolt 0000:06:00.0: enabling interrupt at
>>>>> register 0x38200 bit 0 (0x0 -> 0x1)
>>>>> [ 15.584228] thunderbolt 0000:06:00.0: starting RX ring 0
>>>>> [ 15.585281] thunderbolt 0000:06:00.0: enabling interrupt at
>>>>> register 0x38200 bit 12 (0x1 -> 0x1001)
>>>>> [ 15.586463] thunderbolt 0000:06:00.0: initializing Switch at 0x0
>>>>> (depth: 0, up port: 5)
>>>>> [ 15.587526] thunderbolt 0000:06:00.0: old switch config:
>>>>> [ 15.588569] thunderbolt 0000:06:00.0: Switch: 8086:156d (Revision:
>>>>> 0, TB Version: 2)
>>>>> [ 15.589581] thunderbolt 0000:06:00.0: Max Port Number: 12
>>>>> [ 15.590557] thunderbolt 0000:06:00.0: Config:
>>>>> [ 15.591532] thunderbolt 0000:06:00.0: Upstream Port Number: 5
>>>>> Depth: 0 Route String: 0x0 Enabled: 1, PlugEventsDelay: 255ms
>>>>> [ 15.592530] thunderbolt 0000:06:00.0: unknown1: 0x0 unknown4: 0x0
>>>>> [ 15.593530] thunderbolt 0000:06:00.0: 0: unsupported switch device id 0x156d
>>>>> [ 15.625612] thunderbolt 0000:06:00.0: 0: uid: 0x1001500947a60
>>>>> [ 15.626919] thunderbolt 0000:06:00.0: Port 0: 8086:156d (Revision:
>>>>> 0, TB Version: 1, Type: Port (0x1))
>>>>> [ 15.628028] thunderbolt 0000:06:00.0: Max hop id (in/out): 7/7
>>>>> [ 15.629050] thunderbolt 0000:06:00.0: Max counters: 8
>>>>> [ 15.630156] thunderbolt 0000:06:00.0: NFC Credits: 0x700000
>>>>> [ 15.631685] thunderbolt 0000:06:00.0: Port 1: 8086:156d (Revision:
>>>>> 0, TB Version: 1, Type: Port (0x1))
>>>>> [ 15.632896] thunderbolt 0000:06:00.0: Max hop id (in/out): 15/15
>>>>> [ 15.634000] thunderbolt 0000:06:00.0: Max counters: 16
>>>>> [ 15.635001] thunderbolt 0000:06:00.0: NFC Credits: 0x3c00000
>>>>> [ 15.636582] thunderbolt 0000:06:00.0: Port 2: 8086:156d (Revision:
>>>>> 0, TB Version: 1, Type: Port (0x1))
>>>>> [ 15.637737] thunderbolt 0000:06:00.0: Max hop id (in/out): 15/15
>>>>> [ 15.638862] thunderbolt 0000:06:00.0: Max counters: 16
>>>>> [ 15.639875] thunderbolt 0000:06:00.0: NFC Credits: 0x3c00000
>>>>> [ 15.641452] thunderbolt 0000:06:00.0: Port 3: 8086:156d (Revision:
>>>>> 0, TB Version: 1, Type: Port (0x1))
>>>>> [ 15.642572] thunderbolt 0000:06:00.0: Max hop id (in/out): 15/15
>>>>> [ 15.643702] thunderbolt 0000:06:00.0: Max counters: 16
>>>>> [ 15.644683] thunderbolt 0000:06:00.0: NFC Credits: 0x3c00000
>>>>> [ 15.646250] thunderbolt 0000:06:00.0: Port 4: 8086:156d (Revision:
>>>>> 0, TB Version: 1, Type: Port (0x1))
>>>>> [ 15.647285] thunderbolt 0000:06:00.0: Max hop id (in/out): 15/15
>>>>> [ 15.648370] thunderbolt 0000:06:00.0: Max counters: 16
>>>>> [ 15.649460] thunderbolt 0000:06:00.0: NFC Credits: 0x3c00000
>>>>> [ 15.650539] thunderbolt 0000:06:00.0: Port 5: 8086:156d (Revision:
>>>>> 0, TB Version: 1, Type: NHI (0x2))
>>>>> [ 15.651517] thunderbolt 0000:06:00.0: Max hop id (in/out): 11/11
>>>>> [ 15.652578] thunderbolt 0000:06:00.0: Max counters: 16
>>>>> [ 15.653553] thunderbolt 0000:06:00.0: NFC Credits: 0xf00000
>>>>> [ 15.654712] thunderbolt 0000:06:00.0: Port 6: 8086:156d (Revision:
>>>>> 0, TB Version: 1, Type: PCIe (0x100101))
>>>>> [ 15.655667] thunderbolt 0000:06:00.0: Max hop id (in/out): 8/8
>>>>> [ 15.656681] thunderbolt 0000:06:00.0: Max counters: 2
>>>>> [ 15.657595] thunderbolt 0000:06:00.0: NFC Credits: 0x700000
>>>>> [ 15.658696] thunderbolt 0000:06:00.0: Port 7: 8086:156d (Revision:
>>>>> 0, TB Version: 1, Type: PCIe (0x100101))
>>>>> [ 15.659614] thunderbolt 0000:06:00.0: Max hop id (in/out): 8/8
>>>>> [ 15.660574] thunderbolt 0000:06:00.0: Max counters: 2
>>>>> [ 15.661414] thunderbolt 0000:06:00.0: NFC Credits: 0x700000
>>>>> [ 15.662444] thunderbolt 0000:06:00.0: Port 8: 8086:156d (Revision:
>>>>> 0, TB Version: 1, Type: PCIe (0x100101))
>>>>> [ 15.663289] thunderbolt 0000:06:00.0: Max hop id (in/out): 8/8
>>>>> [ 15.664194] thunderbolt 0000:06:00.0: Max counters: 2
>>>>> [ 15.664995] thunderbolt 0000:06:00.0: NFC Credits: 0x700000
>>>>> [ 15.665982] thunderbolt 0000:06:00.0: Port 9: 8086:156d (Revision:
>>>>> 0, TB Version: 1, Type: PCIe (0x100101))
>>>>> [ 15.666867] thunderbolt 0000:06:00.0: Max hop id (in/out): 8/8
>>>>> [ 15.667701] thunderbolt 0000:06:00.0: Max counters: 2
>>>>> [ 15.668454] thunderbolt 0000:06:00.0: NFC Credits: 0x700000
>>>>> [ 15.669318] thunderbolt 0000:06:00.0: Port 10: 8086:156d
>>>>> (Revision: 0, TB Version: 1, Type: DP/HDMI (0xe0102))
>>>>> [ 15.670092] thunderbolt 0000:06:00.0: Max hop id (in/out): 9/9
>>>>> [ 15.670863] thunderbolt 0000:06:00.0: Max counters: 2
>>>>> [ 15.671624] thunderbolt 0000:06:00.0: NFC Credits: 0x700000
>>>>> [ 15.672488] thunderbolt 0000:06:00.0: Port 11: 8086:156d
>>>>> (Revision: 0, TB Version: 1, Type: DP/HDMI (0xe0101))
>>>>> [ 15.673255] thunderbolt 0000:06:00.0: Max hop id (in/out): 9/9
>>>>> [ 15.674015] thunderbolt 0000:06:00.0: Max counters: 2
>>>>> [ 15.674758] thunderbolt 0000:06:00.0: NFC Credits: 0xf00000
>>>>> [ 15.675617] thunderbolt 0000:06:00.0: Port 12: 8086:156d
>>>>> (Revision: 0, TB Version: 1, Type: DP/HDMI (0xe0101))
>>>>> [ 15.676370] thunderbolt 0000:06:00.0: Max hop id (in/out): 9/9
>>>>> [ 15.677115] thunderbolt 0000:06:00.0: Max counters: 2
>>>>> [ 15.677844] thunderbolt 0000:06:00.0: NFC Credits: 0xf00000
>>>>> [ 15.678887] thunderbolt 0000:06:00.0: 0:1: is unplugged (state: 7)
>>>>> [ 15.679624] thunderbolt 0000:06:00.0: 0:3: is unplugged (state: 7)
>>>> Strange... it does not detect the device. Does the TB device show up in lspci?
>>>>
>>>
>>> This may be my fault. I am not sure if I reconnected the device when I
>>> was debugging. Almost certainly not, actually. I left it while I was
>>> compiling a new kernel and forgot. I'll let you know tonight when I
>>> get back.
>>>
>>>
>>> Adam
>>
>>
>> Yes, definitely was unplugged. Hotplugging seems to work fine in
>> either "Windows 2012" or "Darwin" mode.
>>
>> Suspend works, resume brings up video and then invariably freezes (in
>> either _OSI condition).
>>
>>
>> Adam
>
> Hm, it seems strange that hotplug would not work without the driver in
> win2012 mode. If it works under windows (without additional drivers? -
> maybe bootcamp includes a windows TB driver?) then it should also work
> for us.
>
> Andreas
I am planning to try Windows 8 or 10 on this hardware to see.
I inspected the Boot Camp driver image and did not see and Thunderbolt
drivers. But I will see for sure once I have Windows running.
I did find other Thunderbolt drivers:
https://downloadcenter.intel.com/download/23742/Thunderbolt-Intel-Thunderbolt-driver
If you download and inspect the various .inf files (no need to install
anything), you'll see the PCI matching logic they use.
Adam
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