Messages in this thread | | | Date | Thu, 14 Aug 2003 14:34:54 +0200 (MEST) | From | Geert Uytterhoeven <> | Subject | Re: C99 Initialisers |
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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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