ISCI bus_alloc_resource failed

[Bradley W. Dutton]

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?

Thanks,
Brad