Re: Thunderbolt hotplug not working on MacMini7,1

From: Adam Goode
Date: Thu Apr 23 2015 - 11:10:44 EST

On Thu, Apr 23, 2015 at 9:28 AM, Adam Goode <adam@xxxxxxxxxxxxx> wrote:
>
> On Thu, Apr 23, 2015 at 6:08 AM, Andreas Noever
> <andreas.noever@xxxxxxxxx> 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)


Is "unsupported switch device id 0x156d" a problem?


Adam
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