Re: searching for pci busses

["Jon Smirl" <jonsmirl@gmail.com>]

On 5/30/06, Greg KH <gregkh@suse.de> wrote:
> On Mon, May 29, 2006 at 05:59:39PM -0400, Jeff Garzik wrote:
> > Greg KH wrote:
> > >On Sun, May 28, 2006 at 01:12:26AM +0159, Jiri Slaby wrote:
> > >>Hello,
> > >>
> > >>I want to ask, if there is any function to call (as we debated with
> > >>Jeff), which
> > >>does something like this:
> > >>1) I have some vendor/device ids in table
> > >>2) I want to traverse raws of the table and compare to system devices,
> > >>and if
> > >>found, stop and return pci_dev struct (or raw in the table).
> > >
> > >What's wrong with pci_match_id()?
> > >
> > >Or just using the pci_register_driver() function properly, which handles
> > >all of this logic for you?
> >
> > These aren't PCI devices proper.  These are embedded non-PCI devices,
> > which must search for an unrelated PCI device to figure out what type of
> > platform they are on.
>
> Ok, then use pci_match_id() or pci_get_device().

This is how DRM does it...

        for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) {
                pid = (struct pci_device_id *)&driver->pci_driver.id_table[i];

                pdev = NULL;
                /* pass back in pdev to account for multiple identical cards */
                while ((pdev =
                        pci_get_subsys(pid->vendor, pid->device, pid->subvendor,
                                       pid->subdevice, pdev)) != NULL) {
                        /* stealth mode requires a manual probe */
                        pci_dev_get(pdev);
                        drm_get_dev(pdev, pid, driver);
                }
        }
        return 0;


-- 
Jon Smirl
jonsmirl@gmail.com