Re: [PATCH v2/RESEND] mv_sas: OCZ RevoDrive3 & zDrive R4 support

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Hello.

On 25.10.2011 0:30, Robin H. Johnson wrote:

In the OCZ RevoDrive3/zDrive R4 series, the "OCZ SuperScale Storage
Controller" with "Virtualized Controller Architecture 2.0" really seems
to be a Marvell 88SE9485 part, with OCZ firmware/BIOS.

Developed and tested on OCZ RevoDrive3 120GB [PCI 1b85:1021]

Should work on:
- OCZ RevoDrive3 (2x SandForce 2281)
- OCZ RevoDrive3 X2 (4x SandForce 2281)
- OCZ zDrive R4 CM84 (4x SandForce 2281)
- OCZ zDrive R4 CM88 (8x SandForce 2281)
- OCZ zDrive R4 RM84 (4x SandForce 2582)
- OCZ zDrive R4 RM88 (8x SandForce 2582)

All of this because a friend recently bought a OCZ RevoDrive3 and was
bitten by the lack of Linux support.

Notes from testing:
-------------------
- SMART works.
- VPD Device Identification is "OCZ-REVODRIVE3"
- Thin provisioning/TRIM seems to be implemented as WRITE SAME UNMAP,
   with deterministic (non-zero) read after TRIM, but I'm not sure if it
   works 100% in my testing.
- Some of the tuning in the firmware seems to ensure much better
   performance when in a RAID0 setup than using the two devices
   seperately.

I have not tested booting from the SSD, because all of this was
developed and tested remotely from the actual hardware.

Signed-off-by: Robin H. Johnson<robbat2@xxxxxxxxxx>
Thanks-To: Gordon Pritchard<gordp@xxxxxx>
[...]
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index ae96bbe..3fe46e9 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2868,3 +2868,5 @@

  #define PCI_VENDOR_ID_XEN		0x5853
  #define PCI_DEVICE_ID_XEN_PLATFORM	0x0001
+
+#define PCI_VENDOR_ID_OCZ		0x1b85

The vendor ID macros in this file are sorted by the ID value (except Xen, it seems).

WBR. Sergei

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