Adding linux-ide ...... Richard -----Original Message----- From: Zhao, Richard Sent: Friday, April 18, 2008 3:37 PM To: 'Jeff Garzik' Subject: RE: Add BIOS/OS handoff feature to AHCI You may find it in AHCI spec revision 1.2, section 10.6 . Can you find it? Thanks Richard -----Original Message----- From: Jeff Garzik [mailto:jeff@xxxxxxxxxx] Sent: Friday, April 18, 2008 3:30 PM To: Zhao, Richard Subject: Re: Add BIOS/OS handoff feature to AHCI Zhao, Richard wrote: > Hi Jeff, > > > > AMD's AHCI controller will have the BIOS/OS handoff feature. I'm > considering to add it to ahci driver. > > > > EHCI also have the feature, and EHCI driver add it in > drivers/usb/host/pci-quirks.c, it uses pci fixup final. > > > > There're two places to add the AHCI handoff support: > > 1. pci quirk. drivers/pci/quirks.c > > All ahci drivers will need to do nothing. But BOHC register is in memory > mapped space, we must map it temporally. EHCI pci quirk has temp mapping > too. > > 2. ahci driver > > Every ahci drivers will have to implement it in probe function. I'm not > very sure we can put it here. Perhaps PCI general driver has done too > much modification of ahci controller. > > > > What's your opinion? I am unfamiliar with the specific needs of BIOS hand-off in this case... where may I find that information? Jeff -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
