Yinghai, You need to apply patches 1/12 to 8/12 for this online controller reset (OCR) support. Regards, Bo Yang -----Original Message----- From: yhlu.kernel@xxxxxxxxx [mailto:yhlu.kernel@xxxxxxxxx] On Behalf Of Yinghai Lu Sent: Friday, June 18, 2010 5:19 PM To: Yang, Bo Cc: James.Bottomley@xxxxxxxxxxxxxxxxxxxxx; James.Bottomley@xxxxxxx; linux-scsi@xxxxxxxxxxxxxxx; akpm@xxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx Subject: Re: [PATCH 1/12] scsi: megaraid_sas - Online Controller Reset - I: Enable Online Controller Reset Bit in register related functions On Wed, Jun 9, 2010 at 7:34 PM, Yang, Bo <Bo.Yang@xxxxxxx> wrote: > Enable the Online Controller reset bit in the register related functions. This is first part of the Online Controller Reset. > The driver supports XScle and Gen2 chips. Driver need to read the FW state register to see if there is FW state change > Happen. > > Signed-off-by Bo Yang<bo.yang@xxxxxxx> This patch cause kernel hang just after [ 136.996297] megasas: FW now in Ready state # lspci -vvxxx -s 01:00.0 01:00.0 RAID bus controller: LSI Logic / Symbios Logic LSI MegaSAS 9260 (rev 03) Subsystem: LSI Logic / Symbios Logic MegaRAID SAS 9262-8i 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: 256 bytes Interrupt: pin A routed to IRQ 28 Region 0: I/O ports at 1c00 [size=256] Region 1: Memory at aaefc000 (64-bit, non-prefetchable) [size=16K] Region 3: Memory at aae80000 (64-bit, non-prefetchable) [size=256K] Expansion ROM at aae40000 [disabled] [size=256K] 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: [68] Express (v2) Endpoint, MSI 00 DevCap: MaxPayload 4096 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+ FLReset- MaxPayload 128 bytes, MaxReadReq 512 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend- LnkCap: Port #0, Speed 5GT/s, Width x8, ASPM L0s, Latency L0 <64ns, L1 <1us ClockPM- Surprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+ ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 5GT/s, Width x4, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- DevCap2: Completion Timeout: Range BC, 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: -6dB Capabilities: [d0] Vital Product Data pcilib: sysfs_read_vpd: read failed: Connection timed out Not readable Capabilities: [a8] MSI: Enable- Count=1/1 Maskable- 64bit+ Address: 0000000000000000 Data: 0000 Capabilities: [c0] MSI-X: Enable- Count=15 Masked- Vector table: BAR=1 offset=00002000 PBA: BAR=1 offset=00003800 Capabilities: [100] 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: [138] Power Budgeting <?> Kernel driver in use: megaraid_sas 00: 00 10 79 00 47 01 10 00 03 00 04 01 40 00 00 00 10: 01 1c 00 00 04 c0 ef aa 00 00 00 00 04 00 e8 aa 20: 00 00 00 00 00 00 00 00 00 00 00 00 00 10 62 92 30: 00 00 e4 aa 50 00 00 00 00 00 00 00 0a 01 00 00 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 50: 01 68 03 06 08 00 00 00 00 00 00 00 00 00 00 00 60: 00 00 00 00 00 01 00 00 10 d0 02 00 25 80 00 10 70: 17 28 00 00 82 04 00 00 40 00 42 10 00 00 00 00 80: 00 00 00 00 00 00 00 00 00 00 00 00 16 00 00 00 90: 00 00 00 00 00 00 00 00 02 00 00 00 00 00 00 00 a0: 00 00 00 00 00 00 00 00 05 c0 80 00 00 00 00 00 b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 c0: 11 00 0e 00 01 20 00 00 01 38 00 00 00 00 00 00 d0: 03 a8 ff 1f 82 00 00 00 00 00 00 00 00 00 00 00 e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 YH -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
