PCIe Mini card driver issue in Jetson Tx2

AI_RAJ · January 30, 2019, 3:33pm

Hi,

We are working on the ARM64 PCIe loadable driver for a custom PCIe mini card.

We are creating a driver for this card. On module initialization, pci_enable_device() fails with error no -22(-EINVAL) and the error message is “pci 0000:01:00:0: can’t enable device: BAR 0 [0xffffff00 - 0xffffffff] not claimed”.

On debugging, we noticed that the device resource doesn’t have a parent resource. (r->parent == NULL in pci_enable_devices() in drivers/pci/setup-res.c).

My code is as follows:

dev = pci_get_device(vendor_id, device_id, NULL);
if (dev != NULL) {
ret = pci_enable_device(dev);
if (ret) {
printk(KERN_ALERT “pci_enable_device failed with err no %d\n”, rc);
goto err;
}
…
}

“lspci” command shows:

00:01.0 PCI bridge: NVIDIA Corporation Device 10e5 (rev a1)
01:00.0 Non-VGA unclassified device: Device 4453:0b00

on reading /proc/ioports(“cat /proc/ioports”), I get

00001000-0000ffff : PCI0 I/O
00001000-00001fff : PCI Bus 0000:01

dmesg_log(dmesg | grep pci) is below,

[    0.134608] node /plugin-manager/fragment-500-pcie-config match with board >=3310-1000-500
[    0.135291] node /plugin-manager/fragment-500-e3325-pcie match with board >=3310-1000-500
[    0.240883] iommu: Adding device 10003000.pcie-controller to group 50
[   10.148254] tegra-pcie 10003000.pcie-controller: 4x1, 1x1 configuration
[   10.150304] Modules linked in: pci_tegra(+) bluedroid_pm
[   10.151341] Modules linked in: pci_tegra(+) bluedroid_pm
[   10.151537] tegra-pcie 10003000.pcie-controller: PCIE: Enable power rails
[   10.151940] tegra-pcie 10003000.pcie-controller: probing port 0, using 4 lanes
[   10.153818] tegra-pcie 10003000.pcie-controller: probing port 2, using 1 lanes
[   10.158311] Modules linked in: pci_tegra bluedroid_pm
[   10.584417] tegra-pcie 10003000.pcie-controller: link 2 down, retrying
[   10.986393] tegra-pcie 10003000.pcie-controller: link 2 down, retrying
[   11.388426] tegra-pcie 10003000.pcie-controller: link 2 down, retrying
[   11.397829] tegra-pcie 10003000.pcie-controller: link 2 down, ignoring
[   11.405460] tegra-pcie 10003000.pcie-controller: PCI host bridge to bus 0000:00
[   11.414567] pci_bus 0000:00: root bus resource [mem 0x50100000-0x57ffffff]
[   11.422278] pci_bus 0000:00: root bus resource [mem 0x58000000-0x7fffffff pref]
[   11.431206] pci_bus 0000:00: root bus resource [bus 00-ff]
[   11.437543] pci_bus 0000:00: root bus resource [io  0x1000-0xffff]
[   11.452108] pci 0000:00:01.0: [10de:10e5] type 01 class 0x060400
[   11.459094] pci 0000:00:01.0: PME# supported from D0 D1 D2 D3hot D3cold
[   11.459350] pci 0000:00:01.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[   11.459473] pci 0000:01:00.0: [4453:0b00] type 00 class 0x000000
[   11.459519] pci 0000:01:00.0: reg 0x10: [io  0xffffff00-0xffffffff]
[   11.459789] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01
[   11.459820] pci 0000:00:01.0: BAR 7: assigned [io  0x1000-0x1fff]
[   11.459824] pci 0000:00:01.0: PCI bridge to [bus 01]
[   11.459827] pci 0000:00:01.0:   bridge window [io  0x1000-0x1fff]
[   11.459894] pcieport 0000:00:01.0: enabling device (0000 -> 0001)
[   11.459967] pcieport 0000:00:01.0: Signaling PME through PCIe PME interrupt
[   11.459969] pci 0000:01:00.0: Signaling PME through PCIe PME interrupt
[   11.459974] pcie_pme 0000:00:01.0:pcie01: service driver pcie_pme loaded
[   11.460047] aer 0000:00:01.0:pcie02: service driver aer loaded

It would be helpful if you provide your inputs on this issue.

vidyas · January 31, 2019, 8:56am

What kind of PCIe endpoint is this?
Can you please connect it to an x86 system and provide ‘sudo lspci -vv’ output?

AI_RAJ · January 31, 2019, 11:11am

Hi Vidyas,

Below is lspci log for my device in Ubuntu 32-bit OS x86 platform.

03:00.0 Non-VGA unclassified device: Device 4453:0b00
	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 11
	Region 0: I/O ports at c000 
	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=1/1 Maskable- 64bit+
		Address: 0000000000000000  Data: 0000
	Capabilities: [90] Express (v2) Endpoint, MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
			ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
		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-
		LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L0s, Exit Latency L0s unlimited, L1 <1us
			ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp-
		LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
		DevCap2: Completion Timeout: Range A, TimeoutDis+, LTR-, OBFF Not Supported
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis+, LTR-, OBFF Disabled
		LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
	Capabilities: [100 v1] Device Serial Number 00-00-00-00-00-00-00-00

AI_RAJ · January 31, 2019, 11:13am

Below is complete log for “lspci -vv”

00:00.0 Host bridge: Intel Corporation Atom Processor Z36xxx/Z37xxx Series SoC Transaction Register (rev 11)
	Subsystem: Intel Corporation Atom Processor Z36xxx/Z37xxx Series SoC Transaction Register
	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
	Kernel driver in use: iosf_mbi_pci

00:02.0 VGA compatible controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display (rev 11) (prog-if 00 [VGA controller])
	DeviceName:  Onboard IGD
	Subsystem: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display
	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
	Interrupt: pin A routed to IRQ 89
	Region 0: Memory at 90000000 (32-bit, non-prefetchable) 
	Region 2: Memory at 80000000 (32-bit, prefetchable) 
	Region 4: I/O ports at e080 
	[virtual] Expansion ROM at 000c0000 [disabled] 
	Capabilities: [d0] Power Management version 2
		Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
		Address: fee02004  Data: 4023
	Capabilities: [b0] Vendor Specific Information: Len=07 <?>
	Kernel driver in use: i915
	Kernel modules: i915

00:13.0 SATA controller: Intel Corporation Atom Processor E3800 Series SATA AHCI Controller (rev 11) (prog-if 01 [AHCI 1.0])
	Subsystem: Intel Corporation Atom Processor E3800 Series SATA AHCI Controller
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 88
	Region 0: I/O ports at e070 
	Region 1: I/O ports at e060 
	Region 2: I/O ports at e050 
	Region 3: I/O ports at e040 
	Region 4: I/O ports at e020 
	Region 5: Memory at 90a28000 (32-bit, non-prefetchable) 
	Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
		Address: fee02004  Data: 4030
	Capabilities: [70] 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: [a8] SATA HBA v1.0 BAR4 Offset=00000004
	Kernel driver in use: ahci
	Kernel modules: ahci

00:14.0 USB controller: Intel Corporation Atom Processor Z36xxx/Z37xxx, Celeron N2000 Series USB xHCI (rev 11) (prog-if 30 [XHCI])
	Subsystem: Intel Corporation Atom Processor Z36xxx/Z37xxx, Celeron N2000 Series USB xHCI
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 87
	Region 0: Memory at 90a00000 (64-bit, non-prefetchable) 
	Capabilities: [70] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0-,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+
		Address: 00000000fee02004  Data: 4031
	Kernel driver in use: xhci_hcd

00:18.0 DMA controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series LPIO2 DMA Controller (rev 11) (prog-if 02 [EISA DMA])
	Subsystem: Intel Corporation Atom Processor Z36xxx/Z37xxx Series LPIO2 DMA Controller
	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 17
	Region 0: Memory at 90a18000 (32-bit, non-prefetchable) 
	Region 1: Memory at 90a27000 (32-bit, non-prefetchable) 
	Capabilities: [80] 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-
	Kernel driver in use: dw_dmac_pci
	Kernel modules: dw_dmac_pci

00:18.1 Serial bus controller [0c80]: Intel Corporation Atom Processor Z36xxx/Z37xxx Series LPIO2 I2C Controller #1 (rev 11)
	Subsystem: Intel Corporation Atom Processor Z36xxx/Z37xxx Series LPIO2 I2C Controller
	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 C routed to IRQ 19
	Region 0: Memory at 90a26000 (32-bit, non-prefetchable) 
	Region 1: Memory at 90a25000 (32-bit, non-prefetchable) 
	Capabilities: [80] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D3 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Kernel driver in use: i2c-designware-pci
	Kernel modules: i2c_designware_pci

00:18.7 Serial bus controller [0c80]: Intel Corporation Atom Processor Z36xxx/Z37xxx Series LPIO2 I2C Controller #7 (rev 11)
	Subsystem: Intel Corporation Atom Processor Z36xxx/Z37xxx Series LPIO2 I2C Controller
	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 16
	Region 0: Memory at 90a24000 (32-bit, non-prefetchable) 
	Region 1: Memory at 90a23000 (32-bit, non-prefetchable) 
	Capabilities: [80] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D3 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Kernel driver in use: i2c-designware-pci
	Kernel modules: i2c_designware_pci

00:1a.0 Encryption controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Trusted Execution Engine (rev 11)
	Subsystem: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Trusted Execution Engine
	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 100
	Region 0: Memory at 90500000 (32-bit, non-prefetchable) 
	Region 1: Memory at 90400000 (32-bit, non-prefetchable) 
	Capabilities: [80] 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: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit-
		Address: fee02004  Data: 4025
	Kernel driver in use: mei_txe
	Kernel modules: mei_txe

00:1b.0 Audio device: Intel Corporation Atom Processor Z36xxx/Z37xxx Series High Definition Audio Controller (rev 11)
	Subsystem: Intel Corporation Atom Processor Z36xxx/Z37xxx Series High Definition Audio Controller
	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 101
	Region 0: Memory at 90a14000 (64-bit, non-prefetchable) 
	Capabilities: [50] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
		Address: 00000000fee02004  Data: 4026
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel

00:1c.0 PCI bridge: Intel Corporation Atom Processor E3800 Series PCI Express Root Port 1 (rev 11) (prog-if 00 [Normal decode])
	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 16
	Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
	I/O behind bridge: 0000d000-0000dfff
	Memory behind bridge: 90800000-909fffff
	Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
	BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: [40] Express (v2) Root Port (Slot+), 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 128 bytes
		DevSta:	CorrErr+ UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
		LnkCap:	Port #1, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <4us
			ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp-
		LnkCtl:	ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
		SltCap:	AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surprise+
			Slot #0, PowerLimit 10.000W; Interlock- NoCompl+
		SltCtl:	Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- LinkChg-
			Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-
		SltSta:	Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock-
			Changed: MRL- PresDet- LinkState-
		RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible-
		RootCap: CRSVisible-
		RootSta: PME ReqID 0000, PMEStatus- PMEPending-
		DevCap2: Completion Timeout: Range BC, TimeoutDis+, LTR-, OBFF Not Supported ARIFwd-
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis+, LTR-, OBFF Disabled ARIFwd-
		LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
	Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
		Address: 00000000  Data: 0000
	Capabilities: [90] Subsystem: Intel Corporation Atom Processor E3800 Series PCI Express Root Port 1
	Capabilities: [a0] 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-
	Kernel driver in use: pcieport
	Kernel modules: shpchp

00:1c.1 PCI bridge: Intel Corporation Atom Processor E3800 Series PCI Express Root Port 2 (rev 11) (prog-if 00 [Normal decode])
	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
	Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
	I/O behind bridge: 0000c000-0000cfff
	Memory behind bridge: 90600000-907fffff
	Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
	BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: [40] Express (v2) Root Port (Slot+), 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 128 bytes
		DevSta:	CorrErr+ UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
		LnkCap:	Port #2, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <4us
			ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp-
		LnkCtl:	ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
		SltCap:	AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surprise+
			Slot #1, PowerLimit 10.000W; Interlock- NoCompl+
		SltCtl:	Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- LinkChg-
			Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-
		SltSta:	Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock-
			Changed: MRL- PresDet- LinkState-
		RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible-
		RootCap: CRSVisible-
		RootSta: PME ReqID 0000, PMEStatus- PMEPending-
		DevCap2: Completion Timeout: Range BC, TimeoutDis+, LTR-, OBFF Not Supported ARIFwd-
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis+, LTR-, OBFF Disabled ARIFwd-
		LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
	Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
		Address: 00000000  Data: 0000
	Capabilities: [90] Subsystem: Intel Corporation Atom Processor E3800 Series PCI Express Root Port 2
	Capabilities: [a0] 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-
	Kernel driver in use: pcieport
	Kernel modules: shpchp

00:1c.2 PCI bridge: Intel Corporation Atom Processor E3800 Series PCI Express Root Port 3 (rev 11) (prog-if 00 [Normal decode])
	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 C routed to IRQ 18
	Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
	I/O behind bridge: 0000b000-0000bfff
	Memory behind bridge: fff00000-000fffff
	Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
	BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: [40] Express (v2) Root Port (Slot+), 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 128 bytes
		DevSta:	CorrErr+ UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
		LnkCap:	Port #3, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <4us
			ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp-
		LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
		SltCap:	AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surprise+
			Slot #2, PowerLimit 10.000W; Interlock- NoCompl+
		SltCtl:	Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- LinkChg-
			Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-
		SltSta:	Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock-
			Changed: MRL- PresDet- LinkState-
		RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible-
		RootCap: CRSVisible-
		RootSta: PME ReqID 0000, PMEStatus- PMEPending-
		DevCap2: Completion Timeout: Range BC, TimeoutDis+, LTR-, OBFF Not Supported ARIFwd-
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis+, LTR-, OBFF Disabled ARIFwd-
		LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
	Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
		Address: 00000000  Data: 0000
	Capabilities: [90] Subsystem: Intel Corporation Atom Processor E3800 Series PCI Express Root Port 3
	Capabilities: [a0] 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-
	Kernel driver in use: pcieport
	Kernel modules: shpchp

00:1c.3 PCI bridge: Intel Corporation Atom Processor E3800 Series PCI Express Root Port 4 (rev 11) (prog-if 00 [Normal decode])
	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 D routed to IRQ 19
	Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
	I/O behind bridge: 00001000-00001fff
	Memory behind bridge: fff00000-000fffff
	Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
	BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: [40] Express (v2) Root Port (Slot+), 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 128 bytes
		DevSta:	CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
		LnkCap:	Port #4, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <4us
			ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp-
		LnkCtl:	ASPM L0s L1 Enabled; RCB 64 bytes Disabled- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
		SltCap:	AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surprise+
			Slot #3, PowerLimit 10.000W; Interlock- NoCompl+
		SltCtl:	Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- LinkChg-
			Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-
		SltSta:	Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet- Interlock-
			Changed: MRL- PresDet- LinkState-
		RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible-
		RootCap: CRSVisible-
		RootSta: PME ReqID 0000, PMEStatus- PMEPending-
		DevCap2: Completion Timeout: Range BC, TimeoutDis+, LTR-, OBFF Not Supported ARIFwd-
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled ARIFwd-
		LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
	Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
		Address: 00000000  Data: 0000
	Capabilities: [90] Subsystem: Intel Corporation Atom Processor E3800 Series PCI Express Root Port 4
	Capabilities: [a0] 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-
	Kernel driver in use: pcieport
	Kernel modules: shpchp

00:1d.0 USB controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series USB EHCI (rev 11) (prog-if 20 [EHCI])
	Subsystem: Intel Corporation Atom Processor Z36xxx/Z37xxx Series USB EHCI
	Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin A routed to IRQ 23
	Region 0: Memory at 90a22000 (32-bit, non-prefetchable) 
	Capabilities: [50] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [58] Debug port: BAR=1 offset=00a0
	Capabilities: [98] PCI Advanced Features
		AFCap: TP+ FLR+
		AFCtrl: FLR-
		AFStatus: TP-

00:1e.0 DMA controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series LPIO1 DMA Controller (rev 11) (prog-if 02 [EISA DMA])
	Subsystem: Intel Corporation Atom Processor Z36xxx/Z37xxx Series LPIO1 DMA Controller
	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 19
	Region 0: Memory at 90a10000 (32-bit, non-prefetchable) 
	Region 1: Memory at 90a21000 (32-bit, non-prefetchable) 
	Capabilities: [80] 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-
	Kernel driver in use: dw_dmac_pci
	Kernel modules: dw_dmac_pci

00:1e.1 Serial bus controller [0c80]: Intel Corporation Atom Processor Z36xxx/Z37xxx Series LPIO1 PWM Controller (rev 11)
	Subsystem: Intel Corporation Atom Processor Z36xxx/Z37xxx Series LPIO1 PWM Controller
	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 D routed to IRQ 16
	Region 0: Memory at 90a20000 (32-bit, non-prefetchable) 
	Region 1: Memory at 90a1f000 (32-bit, non-prefetchable) 
	Capabilities: [80] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D3 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Kernel driver in use: pwm-lpss
	Kernel modules: pwm_lpss_pci

00:1e.2 Serial bus controller [0c80]: Intel Corporation Atom Processor Z36xxx/Z37xxx Series LPIO1 PWM Controller (rev 11)
	Subsystem: Intel Corporation Atom Processor Z36xxx/Z37xxx Series LPIO1 PWM Controller
	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 90a1e000 (32-bit, non-prefetchable) 
	Region 1: Memory at 90a1d000 (32-bit, non-prefetchable) 
	Capabilities: [80] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D3 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Kernel driver in use: pwm-lpss
	Kernel modules: pwm_lpss_pci

00:1f.0 ISA bridge: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Power Control Unit (rev 11)
	Subsystem: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Power Control Unit
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Capabilities: [e0] Vendor Specific Information: Len=0c <?>
	Kernel driver in use: lpc_ich
	Kernel modules: lpc_ich

00:1f.3 SMBus: Intel Corporation Atom Processor E3800 Series SMBus Controller (rev 11)
	Subsystem: Intel Corporation Atom Processor E3800 Series SMBus Controller
	Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin B routed to IRQ 18
	Region 0: Memory at 90a1c000 (32-bit, non-prefetchable) 
	Region 4: I/O ports at e000 
	Capabilities: [50] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D3 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Kernel driver in use: i801_smbus
	Kernel modules: i2c_i801

01:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network Connection (rev 03)
	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 16
	Region 0: Memory at 90800000 (32-bit, non-prefetchable) 
	Region 2: I/O ports at d000 
	Region 3: Memory at 90900000 (32-bit, non-prefetchable) 
	Capabilities: [40] 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=1 PME-
	Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
		Address: 0000000000000000  Data: 0000
		Masking: 00000000  Pending: 00000000
	Capabilities: [70] MSI-X: Enable+ Count=5 Masked-
		Vector table: BAR=3 offset=00000000
		PBA: BAR=3 offset=00002000
	Capabilities: [a0] Express (v2) Endpoint, MSI 00
		DevCap:	MaxPayload 512 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us
			ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
		DevCtl:	Report errors: Correctable+ Non-Fatal+ Fatal+ Unsupported+
			RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+ FLReset-
			MaxPayload 128 bytes, MaxReadReq 512 bytes
		DevSta:	CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend-
		LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <2us, L1 <16us
			ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+
		LnkCtl:	ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
		DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR-, OBFF Not Supported
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis+, LTR-, OBFF Disabled
		LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
	Capabilities: [100 v2] Advanced Error Reporting
		UESta:	DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
		UEMsk:	DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
		UESvrt:	DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
		CESta:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
		CEMsk:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
		AERCap:	First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
	Capabilities: [140 v1] Device Serial Number 00-06-d5-ff-ff-30-f1-ce
	Capabilities: [1a0 v1] Transaction Processing Hints
		Device specific mode supported
		Steering table in TPH capability structure
	Kernel driver in use: igb
	Kernel modules: igb

02:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network Connection (rev 03)
	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 17
	Region 0: Memory at 90600000 (32-bit, non-prefetchable) 
	Region 2: I/O ports at c000 
	Region 3: Memory at 90700000 (32-bit, non-prefetchable) 
	Capabilities: [40] 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=1 PME-
	Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
		Address: 0000000000000000  Data: 0000
		Masking: 00000000  Pending: 00000000
	Capabilities: [70] MSI-X: Enable+ Count=5 Masked-
		Vector table: BAR=3 offset=00000000
		PBA: BAR=3 offset=00002000
	Capabilities: [a0] Express (v2) Endpoint, MSI 00
		DevCap:	MaxPayload 512 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us
			ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
		DevCtl:	Report errors: Correctable+ Non-Fatal+ Fatal+ Unsupported+
			RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+ FLReset-
			MaxPayload 128 bytes, MaxReadReq 512 bytes
		DevSta:	CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend-
		LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <2us, L1 <16us
			ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+
		LnkCtl:	ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
		DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR-, OBFF Not Supported
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis+, LTR-, OBFF Disabled
		LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
	Capabilities: [100 v2] Advanced Error Reporting
		UESta:	DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
		UEMsk:	DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
		UESvrt:	DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
		CESta:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
		CEMsk:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
		AERCap:	First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
	Capabilities: [140 v1] Device Serial Number 00-06-d5-ff-ff-30-f1-cf
	Capabilities: [1a0 v1] Transaction Processing Hints
		Device specific mode supported
		Steering table in TPH capability structure
	Kernel driver in use: igb
	Kernel modules: igb

03:00.0 Non-VGA unclassified device: Device 4453:0b00
	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 11
	Region 0: I/O ports at b000 
	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=1/1 Maskable- 64bit+
		Address: 0000000000000000  Data: 0000
	Capabilities: [90] Express (v2) Endpoint, MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
			ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
		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-
		LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L0s, Exit Latency L0s unlimited, L1 <1us
			ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp-
		LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
		DevCap2: Completion Timeout: Range A, TimeoutDis+, LTR-, OBFF Not Supported
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis+, LTR-, OBFF Disabled
		LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
	Capabilities: [100 v1] Device Serial Number 00-00-00-00-00-00-00-00

AI_RAJ · February 1, 2019, 6:47am

Hi,

We fixed the bug by assigning resource from OS itself by calling pci_assign_resource() before pci_enable_device().

Now driver is successfully loaded. After that I tried writing in the port by calling “writeb(PCI_IOBASE + dev_io_base + OFFSET_LED)” from the driver itself. But it fails showing the error below. Did I miss anything here such as mapping? any help is greatly appreciated.

PCI_IOBASE: ffffffbffae00000, BASE: 1000
CPU3: SError detected, daif=140, spsr=0x80000045, mpidr= 80000101, esr= bf000000
CPU3: SError detected, daif=140, spsr=0x80000045, mpidr= 40000101, esr= bf40c000
ROC:CCE Machine Check Error:
#Address Type = Secure DRAM
#Address = 0x0 (Unknown Device)
ROC: IOB Machine Check Error:
#Address Type = Secure DRAM
#Address = 0x0 (Unknown Device).

AI_RAJ · February 6, 2019, 8:23am

Hi,

Any input for above issue?

vidyas · April 24, 2019, 5:20pm

Getting ‘struct pci_dev *’ pointer through the following method is not correct.
dev = pci_get_device(vendor_id, device_id, NULL);
Instead, when your probe function gets called with a ‘struct pci_dev *’ passed to it as the first argument by PCIe sub-system. Please use that for any subsequent PCIe sub-system calls like ‘pci_enable_device()’ Etc…

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