Messages in this thread | | | Date | Wed, 22 Nov 2006 18:26:10 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH] Add IDE mode support for SB600 SATA |
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On Thu, 23 Nov 2006 06:23:50 +0800 "Conke Hu" <conke.hu@amd.com> wrote:
> ATI SB600 SATA controller supports 4 modes: Legacy IDE, Native IDE, AHCI and RAID. Legacy/Native IDE mode is designed for compatibility with some old OS without AHCI driver but looses SATAII/AHCI features such as NCQ. This patch provides users with two options when the SB600 SATA is set as IDE mode by BIOS: > 1. Setting the controller back to AHCI mode and using ahci as its driver. > 2. Using the controller as a normal IDE. > What's more, without this patch, ahci driver always tries to claim all 4 modes of SB600 SATA, but fails in legacy IDE mode. > > Signed-off-by: conke.hu@amd.com > ------- > diff -Nur linux-2.6.19-rc6-git4.orig/drivers/ata/ahci.c linux-2.6.19-rc6-git4/drivers/ata/ahci.c > --- linux-2.6.19-rc6-git4.orig/drivers/ata/ahci.c 2006-11-23 13:36:52.000000000 +0800 > +++ linux-2.6.19-rc6-git4/drivers/ata/ahci.c 2006-11-23 13:50:13.000000000 +0800 > @@ -323,7 +323,14 @@ > { PCI_VDEVICE(JMICRON, 0x2366), board_ahci }, /* JMicron JMB366 */ > > /* ATI */ > +#ifdef CONFIG_SB600_AHCI_IDE > { PCI_VDEVICE(ATI, 0x4380), board_ahci }, /* ATI SB600 non-raid */ > +#else > + { PCI_VENDOR_ID_ATI, 0x4380, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_RAID<<8, 0xffff00, > + board_ahci }, > + { PCI_VENDOR_ID_ATI, 0x4380, PCI_ANY_ID, PCI_ANY_ID, 0x010600, 0xffff00, > + board_ahci }, > +#endif > { PCI_VDEVICE(ATI, 0x4381), board_ahci }, /* ATI SB600 raid */
I doubt if it's appropriate to do all this via ifdefs. Users don't compile their kernels - others compile them for the users. We need the one kernel binary to support both modes. Possible? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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