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[Bug 312380] Re: Support Intel Turbo Memory as a block device


If anyone still cares about this, I have done some work on a reverse-engineered driver.
Reading and writing to the flash partially works, but as a raw flash device (MTD), not a block device. The device does not have a flash translation layer like an SSD.

The code is available at https://github.com/yarrick/turbomem

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  Support Intel Turbo Memory as a block device

Status in The Linux Kernel:
Status in linux package in Ubuntu:

Bug description:
  I have a Lenovo T61 (and another Lenovo T61p) that has Intel Turbo
  Memory in it. I'm not suggesting any approach as to how to use the
  memory - I just want access to it as a block device so I can do
  something with it.

  There is a Brainstorm entry about using Turbo Memory in a fashion
  similar to ReadyBoost: http://brainstorm.ubuntu.com/idea/12409/ This
  is *not* what this bug is about - it's just about making the device
  available for use.

  Here's the relevant output form lspci -vv:

  02:00.0 Memory controller: Intel Corporation Turbo Memory Controller (rev 01)
  	Subsystem: Intel Corporation Turbo Memory 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 11
  	Region 0: Memory at dbdffc00 (32-bit, non-prefetchable) [size=1K]
  	Region 2: I/O ports at 2000 [size=128]
  	[virtual] Expansion ROM at dfe00000 [disabled] [size=64K]
  	Capabilities: [48] Power Management version 2
  		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  		Status: D0 PME-Enable- DSel=0 DScale=0 PME-
  	Capabilities: [50] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable-
  		Address: 00000000  Data: 0000
  	Capabilities: [68] Express (v1) Legacy Endpoint, MSI 01
  		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s unlimited, L1 unlimited
  			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 L1, Latency L0 <512ns, L1 <32us
  			ClockPM- Suprise- LLActRep- BwNot-
  		LnkCtl:	ASPM L0s Enabled; RCB 128 bytes Disabled- Retrain- CommClk+
  			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
  		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-

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