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SubjectRe: AHCI should try to claim all AHCI controllers
Conke Hu wrote:
> Hi all,
> According to PCI 3.0 spec, ACHI's PCI class code is 0x010601,
> and I suggest the ahci driver had better try to claim all ahci
> controllers, pls see the following patch:
>
> diff -Nur linux-2.6.17/drivers/scsi/ahci.c
> linux-2.6.17-ahci/drivers/scsi/ahci.c
> --- linux-2.6.17/drivers/scsi/ahci.c 2006-06-18 09:49:35.000000000
> +0800
> +++ linux-2.6.17-ahci/drivers/scsi/ahci.c 2006-10-31
> 22:50:54.000000000 +0800
> @@ -296,6 +296,11 @@
> board_ahci }, /* ATI SB600 non-raid */
> { PCI_VENDOR_ID_ATI, 0x4381, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
> board_ahci }, /* ATI SB600 raid */
> + /* Claim all AHCI controllers not listed above.
> + * According to PCI 3.0, AHCI's class code is 0x010601
> + */
> + { PCI_AND_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 0x010601,
> 0xffffff,
> + board_ahci },
> { } /* terminate list */
> };

Since things have settled in this area, yes, this would probably be a
good thing to add.

For the benefit of others, some background: we should not be -removing-
any PCI IDs due to this, because quite often the PCI class code will be
RAID or something else, yet still be drive-able with this ahci driver.

Jeff



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