ISCI bus_alloc_resource failed

[Bradley W. Dutton]

Quoting Jim Harris <jim.harris at gmail.com>:

> On Mon, Sep 7, 2015 at 10:34 AM, Bradley W. Dutton <
> brad-fbsd-stable at duttonbros.com> wrote:
>
>> Hi,
>>
>> I'm having trouble with the isci driver in both stable and current. I see
>> the following dmesg in stable:
>>
>> isci0: <Intel(R) C600 Series Chipset SAS Controller (SATA mode)> port
>> 0x5000-0x50ff mem 0xe7afc000-0xe7afffff,0xe7400000-0xe77fffff irq 19 at
>> device 0.0 on pci11
>> isci: 1:000051 ISCI bus_alloc_resource failed
>>
>>
>> I'm running FreeBSD on VMWare ESXi 6 with vt-d passthrough of the isci
>> devices, here is the relevant pciconf output:
>>
>> none2 at pci0:3:0:0:       class=0x0c0500 card=0x062815d9 chip=0x1d708086
>> rev=0x06 hdr=0x00
>>     vendor     = 'Intel Corporation'
>>     device     = 'C600/X79 series chipset SMBus Controller 0'
>>     class      = serial bus
>>     subclass   = SMBus
>>     cap 10[90] = PCI-Express 2 endpoint max data 128(128) link x32(x32)
>>                  speed 5.0(5.0) ASPM disabled(L0s)
>>     cap 01[cc] = powerspec 3  supports D0 D3  current D0
>>     cap 05[d4] = MSI supports 1 message
>>     ecap 000e[100] = ARI 1
>> isci0 at pci0:11:0:0:      class=0x010700 card=0x062815d9 chip=0x1d6b8086
>> rev=0x06 hdr=0x00
>>     vendor     = 'Intel Corporation'
>>     device     = 'C602 chipset 4-Port SATA Storage Control Unit'
>>     class      = mass storage
>>     subclass   = SAS
>>     cap 01[98] = powerspec 3  supports D0 D3  current D0
>>     cap 10[c4] = PCI-Express 2 endpoint max data 128(128) link x32(x32)
>>                  speed 5.0(5.0) ASPM disabled(L0s)
>>     cap 11[a0] = MSI-X supports 2 messages
>>                  Table in map 0x10[0x2000], PBA in map 0x10[0x3000]
>>     ecap 0001[100] = AER 1 0 fatal 0 non-fatal 1 corrected
>>     ecap 000e[138] = ARI 1
>>     ecap 0017[180] = TPH Requester 1
>>     ecap 0010[140] = SRIOV 1
>>
>>
>> I haven't tried booting on bare metal but running a linux distro (centos
>> 7) in the same VM works without issue. Is is possible the SRIOV option is
>> causing trouble? I don't see a BIOS option to disable that setting on this
>> server like I have on some others. Any other ideas to get this working?
>>
>
> I do not think the SRIOV is the problem here.  I do notice that isci(4)
> does not explicitly enable PCI busmaster, which will cause problems with
> PCI passthrough.  I've attached a patch that rectifies that issue.  I'm not
> certain that is the root cause of the interrupt resource allocation failure
> though.
>
> Could you:
>
> 1) Apply the attached patch and retest.
> 2) If you still see the resource allocation failure, reboot in verbose mode
> and provide the resulting dmesg output.
>
> Thanks,
>
> -Jim

Thanks for the patch although the same error still persists. Here is  
the verbose boot log:
http://duttonbrosllc.com/misc/dmesg.boot

Thanks,
Brad