On Thu, Nov 04, 2010 at 10:24:45AM +0100, Markus Armbruster wrote: > Gleb Natapov <gleb@xxxxxxxxxx> writes: > > > On Sun, Oct 31, 2010 at 06:25:53PM -0400, Kevin O'Connor wrote: > >> On Sun, Oct 31, 2010 at 01:40:01PM +0200, Gleb Natapov wrote: > >> > This is current sate of the patch series for people to comment on. > >> > I tried to use open firmware naming scheme to specify device path names. > >> > > >> > The patch series produce names like these: > >> > for pci machine: > >> > /pci@i0cf8/pci-isa-bridge@1/fdc@03f1/floppy@0 > >> > /pci@i0cf8/pci-isa-bridge@1/fdc@03f1/floppy@1 > >> > /pci@i0cf8/ata@1,1/ata-disk@1:0 > >> > /pci@i0cf8/ata@1,1/ata-disk@1:1 > >> > /pci@i0cf8/virtio-blk@3/virtio-disk@0 > >> > /pci@i0cf8/ethernet@4/ethernet-phy@0 > >> > /pci@i0cf8/ethernet@5/ethernet-phy@0 > >> > > >> > for isa machine: > >> > adding '/isa/fdc@03f1/floppy@0' at index 2 > >> > adding '/isa/fdc@03f1/floppy@1' at index 1 > >> > adding '/isa/ata@0170/ata-disk@0:0' at index 0 > >> > adding '/isa/ata@0170/ata-disk@0:1' at index 3 > >> > >> Hi Gleb, > >> > >> How will USB drives be identified? > >> > > USB bus has Open Firmware binding. I haven't look at the spec yet, but it > > should be easy. > > > >> I'm not sure how SeaBIOS will be able to line up something like > >> "/pci@i0cf8/ethernet@4/ethernet-phy@0" to an optionrom BEV. Also, if > >> there is an optionrom with BCVs (eg, a scsi card), I'm not sure how > >> that would that would be identified. > > > > The way to parse "/pci@i0cf8/ethernet@4/ethernet-phy@0" is this: each > > element (between /.../) consist of node-name@unit-address. node-name > > describes device/bus. unit-address is a device address on preceding node. > > So pci@i0cf8 tells us that this is pci bus accessible through io > > register 0x0cf8, ethernet@4 tells us that this is ethernet device in pci > > slot 4 function 0, (ata@1,1 means ata device in slot 1 function 1). > > Aren't "ethernet" and "ata" redundant there? > In case of PCI bus yes. If parent bus does not allow to query device type they are not. -- Gleb. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
