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SubjectRe: C99 Initialisers
On Thu, 14 Aug 2003, jw schultz wrote:
> On Thu, Aug 14, 2003 at 12:05:28PM +0200, Geert Uytterhoeven wrote:
> > On Wed, 13 Aug 2003, Jeff Garzik wrote:
> > > > On Wed, Aug 13, 2003 at 03:44:44PM -0400, Jeff Garzik wrote:
> > > >>enums are easy putting direct references would be annoying, but I also
> > > >>argue it's potentially broken and wrong to store and export that
> > > >>information publicly anyway. The use of enums instead of pointers is
> > > >>practically required because there is a many-to-one relationship of ids
> > > >>to board information structs.
> > > >
> > > > The hard part is that it's actually many-to-many. The same card can have
> > > > multiple drivers. one driver can support many cards.
> > >
> > > pci_device_tables are (and must be) at per-driver granularity. Sure the
> > > same card can have multiple drivers, but that doesn't really matter in
> > > this context, simply because I/we cannot break that per-driver
> > > granularity. Any solution must maintain per-driver granularity.
> >
> > Aren't there any `hidden multi-function in single-function' PCI devices out
> > there? E.g. cards with a serial and a parallel port?
> >
> > At least for the Zorro bus, these exist. E.g. the Ariadne card contains both
> > Ethernet and 2 parallel ports, so the Ariadne Ethernet driver and the (still to
> > be written) Ariadne parallel port driver are both drivers for the same Zorro
> > device.
>
> I'm not sure but i think most of those look like multiple
> pci devices rather than one device with multiple functions.
> I've got an Initio 9520UW: One PCI card with two ini9x00 UW
> SCSI HBAs sharing one interrupt and one EEPro100 on another
> interrupt. During scan it seems to me to be three devices
> sitting behind a bridge.

In most cases it is.

Just found a PCI example myself: there exists iDTV chips that connect to a PCI
bus. It's one device, but internally it has graphics, video, USB, IDE, ...
So you'll have different drivers.

Gr{oetje,eeting}s,
Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds

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