linux-kernel - "use new doorbell-bit-5 reset method" failed to reset the controller

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Date:	Thu, 30 Jun 2011 16:49:22 +0800
From:	Joe Jin <joe.jin@...cle.com>
To:	mike.miller@...com,
	"Stephen M. Cameron" <scameron@...rdog.cce.hp.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"GURUDAS,PAI" <gurudas.pai@...cle.com>,
	Guru Anbalagane <guru.anbalagane@...cle.com>
Subject: "use new doorbell-bit-5 reset method" failed to reset the controller

Hi Stephen,

With linux the latest kernel, when do kdump test on HP DL585G7
we found it failed to reset the controller, driver complained
"'Bit 2 doorbell reset' is supported, but not 'bit 5 doorbell 
reset', Firmware update is recommended", we have upgraded the
firmware to the latest but kdump kernel still failed with
the message.

After revert commit cf0b08d0cd87ada9d284925834d08fb8026da888,
kdump work fine. 

Here is the device info:
03:00.0 0104: 103c:323a (rev 01)
        Subsystem: 103c:3245
        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 e0200000 (64-bit, non-prefetchable) [size=2M]
        Region 2: Memory at e0002000 (64-bit, non-prefetchable) [size=4K]
        Region 4: I/O ports at 4000 [size=256]
        [virtual] Expansion ROM at d0500000 [disabled] [size=512K]
        Capabilities: [40] 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: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
                Address: 0000000000000000  Data: 0000
        Capabilities: [70] Express (v2) Endpoint, MSI 00
                DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <1us, L1 <8us
                        ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
                DevCtl: Report errors: Correctable- Non-Fatal+ Fatal+ Unsupported-
                        RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
                        MaxPayload 128 bytes, MaxReadReq 4096 bytes
                DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
                LnkCap: Port #0, Speed 5GT/s, Width x8, ASPM L0s, Latency L0 <512ns, L1 <64us
                        ClockPM- Surprise- LLActRep- BwNot-
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk-
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 2.5GT/s, Width x4, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                DevCap2: Completion Timeout: Not Supported, TimeoutDis+
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
                LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
                         Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
                         Compliance De-emphasis: -6dB
                LnkSta2: Current De-emphasis Level: -3.5dB
        Capabilities: [ac] MSI-X: Enable+ Count=16 Masked-
                Vector table: BAR=0 offset=001c2000
                PBA: BAR=0 offset=001c4000
        Capabilities: [100 v1] 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-
        Kernel driver in use: hpsa
        Kernel modules: hpsa


Seems doorbell-bit-5 reset method did not work properly with the device?
Any input will appreciate.

Thanks,
Joe
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