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Message-ID: <9e4733910605300952v1cf56beasc2a907cc77b8a09f@mail.gmail.com>
Date: Tue, 30 May 2006 12:52:31 -0400
From: "Jon Smirl" <jonsmirl@gmail.com>
To: "Greg KH" <gregkh@suse.de>
Subject: Re: searching for pci busses
Cc: "Jeff Garzik" <jgarzik@pobox.com>, "Greg KH" <greg@kroah.com>,
       "Jiri Slaby" <jirislaby@gmail.com>,
       "Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
       linux-pci@atrey.karlin.mff.cuni.cz
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References: <4478DCF1.8080608@gmail.com> <20060529214753.GD10875@kroah.com>
	 <447B6ECB.9080207@pobox.com> <20060530163821.GC7146@suse.de>
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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