Hudson-D4 (A88X): IRQ routing of XHCI seems incomplete?

[Idwer Vollering]

Board: asus/f2a85-m

In "AMD Bolton FCH Register Reference Guide" (51192), page 2-154, this
register "Interrupt Line – RW – 32 bits - [PCI_Reg:3Ch]" is 0x12/0x11
while having booted the vendor binary and 0xff/0xff when having booted
coreboot.

Could the erratic value cause SeaBIOS boot issues? See
http://www.coreboot.org/pipermail/seabios/2014-June/008148.html and
http://www.coreboot.org/pipermail/seabios/2014-June/008150.html

lspci -s 10.{0,1} -nnvvvxx output follows.

vendor binary:
00:10.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH
USB XHCI Controller [1022:7812] (rev 03) (prog-if 30 [XHCI])
    Subsystem: ASUSTeK Computer Inc. Device [1043:8527]
    Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx+
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 0, Cache Line Size: 64 bytes
    Interrupt: pin A routed to IRQ 18
    Region 0: Memory at fef4a000 (64-bit, non-prefetchable)
    Capabilities: [50] Power Management version 3
        Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0+,D1-,D2-,D3hot+,D3cold+)
        Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
    Capabilities: [70] MSI: Enable+ Count=1/8 Maskable- 64bit+
        Address: 00000000fee13000  Data: 0031
    Capabilities: [90] MSI-X: Enable- Count=8 Masked-
        Vector table: BAR=0 offset=00001000
        PBA: BAR=0 offset=00001080
    Capabilities: [a0] Express (v2) Root Complex Integrated Endpoint, MSI 00
        DevCap:    MaxPayload 128 bytes, PhantFunc 0
            ExtTag- RBE+
        DevCtl:    Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
            RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
            MaxPayload 128 bytes, MaxReadReq 512 bytes
        DevSta:    CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
        DevCap2: Completion Timeout: Not Supported, TimeoutDis+, LTR+,
OBFF Not Supported
        DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-,
OBFF Disabled
00: 22 10 12 78 06 04 10 00 03 30 03 0c 10 00 80 00
10: 04 a0 f4 fe 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 27 85
30: 00 00 00 00 50 00 00 00 00 00 00 00 12 01 00 00
40: 00 00 00 00 00 00 00 00 88 00 00 00 08 77 76 76
50: 01 70 03 c8 08 00 00 00 00 00 00 00 00 00 00 00
60: 30 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 05 90 87 00 00 30 e1 fe 00 00 00 00 31 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 11 a0 07 00 00 10 00 00 80 10 00 00 00 00 00 00
a0: 10 00 92 00 c0 8f 00 00 00 28 10 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 10 08 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: fc 1f 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 08 17 80 00 00 00 00 00 00 00 00 00 00 00 00 00

00:10.1 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH
USB XHCI Controller [1022:7812] (rev 03) (prog-if 30 [XHCI])
    Subsystem: ASUSTeK Computer Inc. Device [1043:8527]
    Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx+
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 0, Cache Line Size: 64 bytes
    Interrupt: pin B routed to IRQ 17
    Region 0: Memory at fef48000 (64-bit, non-prefetchable)
    Capabilities: [50] Power Management version 3
        Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0+,D1-,D2-,D3hot+,D3cold+)
        Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
    Capabilities: [70] MSI: Enable+ Count=1/8 Maskable- 64bit+
        Address: 00000000fee10000  Data: 0034
    Capabilities: [90] MSI-X: Enable- Count=8 Masked-
        Vector table: BAR=0 offset=00001000
        PBA: BAR=0 offset=00001080
    Capabilities: [a0] Express (v2) Root Complex Integrated Endpoint, MSI 00
        DevCap:    MaxPayload 128 bytes, PhantFunc 0
            ExtTag- RBE+
        DevCtl:    Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
            RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
            MaxPayload 128 bytes, MaxReadReq 512 bytes
        DevSta:    CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
        DevCap2: Completion Timeout: Not Supported, TimeoutDis+, LTR+,
OBFF Not Supported
        DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-,
OBFF Disabled
00: 22 10 12 78 06 04 10 00 03 30 03 0c 10 00 00 00
10: 04 80 f4 fe 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 27 85
30: 00 00 00 00 50 00 00 00 00 00 00 00 11 02 00 00
40: 00 00 00 00 00 00 00 00 04 00 00 00 11 01 66 00
50: 01 70 03 c8 08 00 00 00 00 00 00 00 00 00 00 00
60: 30 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 05 90 87 00 00 00 e1 fe 00 00 00 00 34 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 11 a0 07 00 00 10 00 00 80 10 00 00 00 00 00 00
a0: 10 00 92 00 c0 8f 00 00 00 28 10 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 10 08 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: fc 1f 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 08 17 80 00 00 00 00 00 00 00 00 00 00 00 00 00

coreboot:
00:10.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH
USB XHCI Controller [1022:7812] (rev 03) (prog-if 30 [XHCI])
    Subsystem: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI
Controller [1022:7812]
    Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx+
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 0, Cache Line Size: 64 bytes
    Interrupt: pin A routed to IRQ 255
    Region 0: Memory at f0148000 (64-bit, non-prefetchable)
    Capabilities: [50] Power Management version 3
        Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0+,D1-,D2-,D3hot+,D3cold+)
        Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
    Capabilities: [70] MSI: Enable+ Count=1/8 Maskable- 64bit+
        Address: 00000000fee10000  Data: 0033
    Capabilities: [90] MSI-X: Enable- Count=8 Masked-
        Vector table: BAR=0 offset=00001000
        PBA: BAR=0 offset=00001080
    Capabilities: [a0] Express (v2) Root Complex Integrated Endpoint, MSI 00
        DevCap:    MaxPayload 128 bytes, PhantFunc 0
            ExtTag- RBE+
        DevCtl:    Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
            RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
            MaxPayload 128 bytes, MaxReadReq 512 bytes
        DevSta:    CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
        DevCap2: Completion Timeout: Not Supported, TimeoutDis+, LTR+,
OBFF Not Supported
        DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-,
OBFF Disabled
00: 22 10 12 78 06 04 10 00 03 30 03 0c 10 00 80 00
10: 04 80 14 f0 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 22 10 12 78
30: 00 00 00 00 50 00 00 00 00 00 00 00 ff 01 00 00
40: 00 00 00 00 00 00 00 00 04 00 00 00 11 01 ff 00
50: 01 70 03 c8 08 00 00 00 00 00 00 00 00 00 00 00
60: 30 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 05 90 87 00 00 00 e1 fe 00 00 00 00 33 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 11 a0 07 00 00 10 00 00 80 10 00 00 00 00 00 00
a0: 10 00 92 00 c0 8f 00 00 00 28 10 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 10 08 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: fc 1f 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 08 17 80 00 00 00 00 00 00 00 00 00 00 00 00 00

00:10.1 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH
USB XHCI Controller [1022:7812] (rev 03) (prog-if 30 [XHCI])
    Subsystem: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI
Controller [1022:7812]
    Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx+
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 0, Cache Line Size: 64 bytes
    Interrupt: pin B routed to IRQ 255
    Region 0: Memory at f014a000 (64-bit, non-prefetchable)
    Capabilities: [50] Power Management version 3
        Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0+,D1-,D2-,D3hot+,D3cold+)
        Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
    Capabilities: [70] MSI: Enable+ Count=1/8 Maskable- 64bit+
        Address: 00000000fee11000  Data: 0032
    Capabilities: [90] MSI-X: Enable- Count=8 Masked-
        Vector table: BAR=0 offset=00001000
        PBA: BAR=0 offset=00001080
    Capabilities: [a0] Express (v2) Root Complex Integrated Endpoint, MSI 00
        DevCap:    MaxPayload 128 bytes, PhantFunc 0
            ExtTag- RBE+
        DevCtl:    Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
            RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
            MaxPayload 128 bytes, MaxReadReq 512 bytes
        DevSta:    CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
        DevCap2: Completion Timeout: Not Supported, TimeoutDis+, LTR+,
OBFF Not Supported
        DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-,
OBFF Disabled
00: 22 10 12 78 06 04 10 00 03 30 03 0c 10 00 00 00
10: 04 a0 14 f0 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 22 10 12 78
30: 00 00 00 00 50 00 00 00 00 00 00 00 ff 02 00 00
40: 00 00 00 00 00 00 00 00 04 00 00 00 11 01 ff 00
50: 01 70 03 c8 08 00 00 00 00 00 00 00 00 00 00 00
60: 30 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 05 90 87 00 00 10 e1 fe 00 00 00 00 32 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 11 a0 07 00 00 10 00 00 80 10 00 00 00 00 00 00
a0: 10 00 92 00 c0 8f 00 00 00 28 10 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 10 08 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: fc 1f 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 08 17 80 00 00 00 00 00 00 00 00 00 00 00 00 00