linux-kernel - Re: [PATCH] mv_sas: OCZ RevoDrive3 & zDrive R4 support

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Message-ID: <CACqU3MVkm25gzfFns3HqFj8bkshGefyEaMDw=QtaqJ+HsR9F3Q@mail.gmail.com>
Date:	Wed, 26 Oct 2011 18:08:34 -0400
From:	Arnaud Lacombe <lacombar@...il.com>
To:	"Robin H. Johnson" <robbat2@...too.org>
Cc:	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	linux-ide@...r.kernel.org
Subject: Re: [PATCH] mv_sas: OCZ RevoDrive3 & zDrive R4 support

Hi,

On Sat, Oct 8, 2011 at 11:47 PM, Robin H. Johnson <robbat2@...too.org> wrote:
> From: "Robin H. Johnson" <robbat2@...too.org>
>
> 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@...too.org>
> Thanks-To: Gordon Pritchard <gordp@....ca>
> ---
>  drivers/scsi/mvsas/mv_init.c |   10 ++++++++++
>  include/linux/pci_ids.h      |    2 ++
>  2 files changed, 12 insertions(+), 0 deletions(-)
>
>  Tested and cleaned up now :-). Please apply.
>
> diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c
> index 4e9af66..b88315a 100644
> --- a/drivers/scsi/mvsas/mv_init.c
> +++ b/drivers/scsi/mvsas/mv_init.c
> @@ -723,6 +723,16 @@ static struct pci_device_id __devinitdata mvs_pci_table[] = {
>                .class_mask     = 0,
>                .driver_data    = chip_9485,
>        },
> +       { PCI_VDEVICE(OCZ, 0x1021), chip_9485}, /* OCZ RevoDrive3 */
> +       { PCI_VDEVICE(OCZ, 0x1022), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
> +       { PCI_VDEVICE(OCZ, 0x1040), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
> +       { PCI_VDEVICE(OCZ, 0x1041), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
> +       { PCI_VDEVICE(OCZ, 0x1042), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
> +       { PCI_VDEVICE(OCZ, 0x1043), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
> +       { PCI_VDEVICE(OCZ, 0x1044), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
> +       { PCI_VDEVICE(OCZ, 0x1080), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
> +       { PCI_VDEVICE(OCZ, 0x1083), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
> +       { PCI_VDEVICE(OCZ, 0x1084), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
>
>        { }     /* terminate list */
>  };
> 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
> --
> 1.7.7
>
Out of curiosity, do you know if the current mvsas driver would
support Marvell 88nv9143 family of chip ?

Thanks,
 - Arnaud

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